Affective Instability: Impact of Fluctuating Emotions on Regulation and Psychological Well-Being.

Previous research has focused on understanding the occurrence of intense and fluctuating emotions and the ability to manage these emotions and affective states. These phenomena have been, respectively, labeled as affective instability and emotion regulation and have been studied among individuals diagnosed with borderline personality disorder (BPD), attention-deficit/hyperactivity disorder (ADHD), bipolar disorder (BD), and post-traumatic stress disorder (PTSD). Previous findings suggest that affective instability may be associated with poorer psychological well-being. The present study aims to investigate the general tendency of affective instability and capacity for emotional regulation among college students, regardless of a previous psychological diagnosis, and to understand the relationship between these processes and psychological well-being. Three questionnaires were administered to measure levels of affective instability, the ability to manage fluctuating affective states, and overall psychological well-being. The findings suggest that (1) individuals with diagnoses experience affective lability and difficulty regulating emotions at a greater rate than those without, (2) higher affective lability scores are consistent with more significant emotion dysregulation and lower overall psychological well-being, and (3) scores on the Affective lability Scale (ALS) and the Difficulties in Emotional Regulation Scale (DERS) are reliable predictors of one's estimated Global Assessment of Functioning (GAF) scores. Although causation has not been established, the evidence suggests that individuals with diagnoses experience greater difficulty in regulating their emotions, have greater affective lability, and experience diminished psychological well-being and day-to-day functionality. Certain anecdotal evidence suggests that emotional lability can be endogenous and affect multiple aspects of an individual's social, occupational, and personal life. By revising the existing literature and the present findings, the authors provide insights into the significance of endogenous factors in the context of affective lability and offer suggestions for future research.

The relationship between childhood adversity and affective instability across psychiatric disorders: A meta-analysis.

INTRODUCTION: Affective instability represents an important, transdiagnostic biobehavioural dimension of mental ill health and clinical outcome. The causes of affective instability remain unclear. This systematic review and meta-analysis evaluated the extent to which exposure to childhood adversity is associated with affective instability across psychiatric disorders, and which forms of adversity are most strongly associated with affective instability. METHODS: The review followed a published protocol (PROSPERO: CRD42020168676). Searches in Medline, Embase and PsychInfo identified studies using quantitative measures of childhood adversity and affective instability, published between January 1980 and July 2023. Data were analysed using a random effects meta-analysis separately for each outcome, namely affective lability, emotion dysregulation, and rapid cycling. The Mixed-Methods Appraisal Tool was used to appraise the quality of the literature. RESULTS: The search identified 36 studies involving 8431 participants. All reports focused on cross-sectional associations. We did not identify any prospective longitudinal research. The analysis showed small, but statistically significant effects of childhood adversity on affective lability (r = 0.09, 95% CI 0.02, 0.17), emotion dysregulation (r = 0.25, 95% CI 0.19, 0.32), and rapid cycling (OR = 1.39; 95% CI 1.14, 1.70). When considering adversity subtypes, emotional abuse showed the strongest effect on affective lability (r = 0.16, 95% CI 0.07, 0.24) and emotion dysregulation (r = 0.32, 95% CI 0.19, 0.44). Quality assessment scores were generally low. Most studies failed to control for confounding factors or offer assurances around the representativeness of the samples. CONCLUSIONS: The findings suggest that childhood adversity, particularly emotional abuse, is associated emotional instability in adulthood, but further prospective longitudinal research is needed to confirm causality. The findings have implications for the prevention and treatment of affective instability across psychiatric disorders.

Negative affect instability predicts elevated depressive and generalized anxiety disorder symptoms even when negative affect intensity is controlled for: an ecological momentary assessment study.

Introduction: Mood and anxiety disorders are characterized by abnormal levels of positive affect (PA), negative affect (NA) and changes in how emotions unfold over time. To better prevent and treat those disorders, it is crucial to determine which kind of indices of emotion dynamics best predict elevated depressive and generalized anxiety symptoms. Methods: 221 individuals (60 men; mean age = 46 years, SD = 15 years) completed a 7-day ecological momentary assessment study, where their positive and negative affective experience was assessed 5 times a day. For each participant, the intensity, instability, inertia, and differentiation of PA and NA were calculated. The Estonian Emotional State Questionnaire was used to assess depressive and generalized anxiety disorder (GAD) symptoms. Results: We found that NA and PA intensity, and NA instability predicted elevated depressive and GAD symptoms. Models including NA instability alongside PA and NA intensity showed the best fit for both depression and generalized anxiety, as NA instability alongside other variables significantly increased the odds of having elevated depressive and GAD symptoms. Affective inertia, differentiation, and PA instability were not associated with depressive and GAD symptoms. Discussion: In addition to the mean levels of affect, it is important to study other emotion dynamic indices such as NA instability, as these offer a more nuanced view of underlying emotion dysregulation processes. This could, in the long-term, help tailor more specific prevention and intervention methods for mood and anxiety disorders.

Greater within- and between-day instability is associated with worse anxiety and depression symptoms.

BACKGROUND: Depression and anxiety affect hundreds of millions of people worldwide, and their prevalence increased during the COVID-19 pandemic as social schedules were disrupted. This study explores the associations between anxiety and depression and within- and between-day instability of affective, somatic, and cognitive symptoms during the early pandemic stages. METHODS: Participants (n = 153, ages 18-77, 72 % female) reported daily levels of affective (anxiety/sadness), somatic (appetite/sleepiness), and cognitive (concentration/energy) symptoms for 14-44 days at five timepoints: 0, 3, 6, 9, and 12 h after awakening. At the end of the study, participants completed validated scales for anxiety (GAD-7) and depression (PHQ-9). Symptom instability was assessed using the Absolute Real Variability (ARV) index. Regression models examined within-day instability (WD-I) and between-day instability (BD-I) with GAD-7 and PHQ-9 scores as outcomes. RESULTS: Greater instability (both WD-I and BD-I) of affective symptoms correlated with elevated GAD-7 and PHQ-9 scores. For somatic and cognitive symptoms, greater BD-I was associated with higher scores. LIMITATIONS: The study used retrospective daily data, which could benefit from real-time assessments for improved accuracy. CONCLUSIONS: This study provides empirical evidence of a connection between greater anxiety and depression severity and increased instability in daily mood and physiological symptoms. The findings underscore the importance of consistent symptom monitoring to understand overall mental health trajectories. Additionally, it highlights the role of daily routines in stabilizing the circadian system, potentially regulating physiological and psychological processes and reducing symptom instability.

Development of a self-report screening instrument for emotional dysregulation: the Reactivity, Intensity, Polarity and Stability questionnaire, screening version (RIPoSt-SV).

BACKGROUND: Emotional dysregulation (ED) refers to the inability to manage emotional experiences or expressions hindering goal-oriented behavior. Moderate impairment on at least two domains among temper control, affective lability, and emotional over-reactivity has been proposed to identify ED in adults with attention-deficit/hyperactivity disorder (ADHD). No screening measure designed for use in diverse psychiatric samples exists. We aimed to develop a self-report screening tool for ED based on the 40-item version of the Reactivity, Intensity, Polarity, and Stability questionnaire (RIPoSt-40). METHODS: 150 adult outpatients with non-psychotic conditions were enrolled between February and July 2023 at the Second Psychiatry Unit of Pisa University Hospital. Clinically significant ED (CSED) was defined based on the previously suggested approach for ADHD. Differences between patients with and without CSED were tested. To develop our screening instrument, a decision tree algorithm was trained by hyperparameter tuning through 5-fold cross-validation in 120 subjects and tested on the remaining 30. RESULTS: 75 subjects met criteria for CSED (50 %). CSED was associated with lower age and higher prevalence of psychiatric conditions, including minor mood disorders, ADHD, cannabis use disorders, and eating disorders. We identified a decision tree consisting of six items from RIPoSt-40 that effectively detected CSED, with accuracy, sensitivity, specificity, positive and negative predictive values of 80 % or higher in both the training and testing sets. LIMITATIONS: Tertiary-level; no consensus on criteria; sample size. CONCLUSION: The screening version of the Reactivity, Intensity, Polarity, and Stability questionnaire (RIPoSt-SV) demonstrates promise as a valuable tool for ED screening in clinical settings.

Influence of affective instability on suicidal ideation beyond traumatic brain injury and posttraumatic stress disorder in veterans.

OBJECTIVE: Mild traumatic brain injury (TBI) is associated with long-term consequences, including greater risk for posttraumatic stress disorder (PTSD) and suicidal ideation. Affective instability is also independently related to PTSD and suicidality, which may explain why some individuals continue to experience chronic psychiatric complaints following mild TBI. The purpose of the present study was to evaluate affective instability as a key factor for PTSD and suicidal ideation among Veterans with and without TBI. METHOD: Participants (N = 299 Veterans; 86.96% male) completed the Personality Assessment Inventory (PAI) and structured clinical interviews for TBI and psychiatric diagnoses. Hierarchical linear regression was used to evaluate main and interaction effects. RESULTS: There were no significant differences in affective instability (p = 0.140) or suicidal ideation (p = 0.453) between Veterans with or without TBI. Individuals with TBI were more likely to have a PTSD diagnosis (p = 0.001). Analyses evaluating PTSD diagnosis as an outcome indicated a main effect of affective instability (p < 0.001), but not TBI (p = 0.619). Analyses evaluating suicidal ideation as an outcome demonstrated an interaction effect between PTSD and affective instability beyond the effects of TBI (p = 0.034). CONCLUSIONS: Severe Affective instability appears to be a key factor in suicidal ideation among Veterans beyond TBI or PTSD history. PTSD was more strongly associated with suicidality at lower and moderate levels of affective instability. At severe levels of affective instability, however, Veterans with and without PTSD experienced suicidal ideation at similar rates. Findings suggests that high levels of affective instability not better explained by other psychiatric conditions confers similar suicidality risk to that of PTSD in a Veteran population.

Network Analysis of Borderline Personality Features in Adolescence Using a Screening Tool in a Chinese Community Sample.

INTRODUCTION: This study investigated the structure of the borderline personality features (BPFs) network and the most central BPF in adolescence. METHODS: Cross-sectional self-report data from 4,866 Chinese adolescents (M = 13.96, SD = 1.64; 61.3% girls) were included in the network analysis models. BPFs were assessed with the McLean Screening Instrument for Borderline Personality Disorder. RESULTS: Identity disturbance and affective instability emerged as the most central BPF in the current adolescent sample. In addition, chronic emptiness was also found with high centrality. The general networks of BPF were very similar between adolescent boys and girls, although some differences were detected. DISCUSSION: This study further supports the necessity of BPD assessment and diagnosis in adolescence and identifies the distinctive importance of identity and affective dysregulation in the early development of BPD. The findings provide empirical insights into the interconnections of BPF, which resonate with therapeutic mechanisms of evidence-based treatments for BPD. However, the research was limited in its use of a screening measurement rather than a diagnostic tool. Future studies can further explore BPD psychopathology in adolescence with longitudinal data and clinical interviews.

The Brief Emotion Dysregulation Scale: Development, Preliminary Validation, and Recommendations for Use.

Emotion dysregulation is a multi-faceted, transdiagnostic construct, and its assessment is crucial for characterizing its role in the development, maintenance, and treatment of psychiatric problems. We developed the Brief Emotion Dysregulation Scale (BEDS) to capture four components of emotion dysregulation: sensitivity, lability, reactivity, and consequences. We examined factor structure and construct validity in four independent samples of college students (N = 1,485). We elected to treat consequences as a separate index of problems associated with emotion dysregulation. Exploratory and confirmatory factor analyses did not support the reactivity subscale and instead supported a well-fitting two-factor solution for sensitivity and lability. Multi-group analyses demonstrated strong factorial invariance by gender. The resulting 12-item BEDS includes sensitivity and lability subscales and a separate consequences scale to indicate associated problems. Convergent correlations suggested good construct validity. This provides preliminary support for the BEDS as a brief transdiagnostic screening tool for emotion dysregulation and associated consequences.

Biofeedback and Treatment for Borderline Personality Disorder.

Empirically validated treatments for borderline personality disorder rely on fostering self-awareness of one's internal experience for treatment success, yet these treatments do not include objective tools to assess self-awareness. Integrating biofeedback into empirically supported treatments provides a way to objectively measure physiological correlates of emotional states, thereby enhancing accurate self-assessment. By using biofeedback, individuals with borderline personality disorder may gain skills to increase self-awareness, improve emotion regulation, and enhance behavioral control. The authors propose that biofeedback can be used to objectively measure fluctuating emotional intensity, thereby facilitating structured self-assessment of emotions and enabling more effective use of interventions for emotion regulation; can be delivered by trained mental health professionals; and may even be considered as a stand-alone intervention replacing alternative, more costly, treatments.

Pharmacologic and non-pharmacologic interventions for emotional lability: A meta-analysis.

Emotional Lability (EL) is a common symptom dimension in a variety of psychiatric disorders. However, as it is not typically a diagnosis in its own right, it lacks a consistently applied clinical definition and treatment approach. Therefore, in this review we performed a meta-analysis to determine the effect sizes for treatments of EL across diagnostic categories. We then conducted subgroup analyses to compare effect sizes for pharmacologic (MED) and behavioral (BEH) treatments, according to underlying diagnosis, and according to medication class. We found that pharmacologic and non-pharmacologic treatments are effective for EL, and that the effect sizes were similar - a finding with implications for clinical practice. Our findings also support future research which approaches EL as an important construct independent of underlying diagnosis.

[How I explore affective instability]. / Comment j'explore l'instabilité affective.

Affective instability is a common phenomenon in adults. It may be the expression of underlying organic or psychiatric conditions. This is a potentially disabling symptom for the individual, which can cause psychological distress and even consequences in daily life functioning. This article is intended for any healthcare professional and aims to clarify the assessment and diagnostic approach to a patient with mood swings.

L'instabilité affective est un phénomène fréquent chez l'adulte. Elle peut être l'expression d'affections psychiatriques ou non psychiatriques sous-jacentes. Il s'agit d'un symptôme potentiellement invalidant pour l'individu, pouvant entraîner une détresse psychologique, voire des conséquences dans le fonctionnement au quotidien. Cet article est destiné à tout professionnel de la santé et vise à éclaircir l'évaluation et la démarche diagnostique face à un patient avec des sautes d'humeur.

Maternal-Infant Attachment and its Relationships with Postpartum Depression, Anxiety, Affective Instability, Stress, and Social Support in a Canadian Community Sample.

As a crucial component of child development, maternal-infant attachment influences a child's cognitive, psychological, and social development. Maternal depression, anxiety, stress, and social support have been identified as risk factors for poor maternal-infant attachment in some studies, while others did not find such relationships. The aim of this study was to examine the associations of maternal-infant attachment with depression, anxiety, affective instability, stress, social support, and other variables in a community sample of Canadian postpartum women. A total of 108 Canadian postpartum women participated in this cross-sectional study. The Depression, Anxiety, and Stress Scale-21 (DASS-21) assessed depression, anxiety, and stress, and the Affective lability Scale-18 measured affective instability (AI). Multiple linear regression was conducted to examine the association between maternal-infant attachment and other variables. The findings revealed a significant association of maternal-infant attachment with postpartum depression, and infant temperament, while anxiety, AI, stress, and social support were not identified as predictors for maternal-infant attachment. The results implicate the importance of addressing maternal depression and maternal-infant attachment, consequently decreasing the risk for childhood psychopathology.

Borderline personality disorder symptom networks across adolescent and adult clinical samples: examining symptom centrality and replicability.

BACKGROUND: Numerous theories posit different core features to borderline personality disorder (BPD). Recent advances in network analysis provide a method of examining the relative centrality of BPD symptoms, as well as examine the replicability of findings across samples. Additionally, despite the increase in research supporting the validity of BPD in adolescents, clinicians are reluctant to diagnose BPD in adolescents. Establishing the replicability of the syndrome across adolescents and adults informs clinical practice and research. This study examined the stability of BPD symptom networks and centrality of symptoms across samples varying in age and clinical characteristics. METHODS: Cross-sectional analyses of BPD symptoms from semi-structured diagnostic interviews from the Collaborative Longitudinal Study of Personality Disorders (CLPS), the Methods to Improve Diagnostic Assessment and Service (MIDAS) study, and an adolescent clinical sample. Network attributes, including edge (partial association) strength and node (symptom) expected influence, were compared. RESULTS: The three networks were largely similar and strongly correlated. Affective instability and identity disturbance emerged as relatively central symptoms across the three samples, and relationship difficulties across adult networks. Differences in network attributes were more evident between networks varying both in age and in BPD symptom severity level. CONCLUSIONS: Findings highlight the relative importance of affective, identity, and relationship symptoms, consistent with several leading theories of BPD. The network structure of BPD symptoms appears generally replicable across multiple large samples including adolescents and adults, providing further support for the validity of the diagnosis across these developmental phases.

Borderline Personality Pathology in Major Depressive Disorder, Bipolar I and II Disorder, and Its Relationship With Childhood Trauma.

OBJECTIVE: Mood disorder and borderline personality pathology (BPP) are frequently comorbid and relate to childhood trauma. We investigated the relationship between childhood trauma and BPP features in mood disorder patients versus controls. METHODS: A total of 488 mood disorder patients, particularly major depressive disorder (MDD), bipolar I disorder (BD I), and bipolar II disorder (BD II), and 734 controls were included. We examined between-group BPP-related differences and correlated between BPP and childhood trauma using the Childhood Trauma Questionnaire-Short Form (CTQ) and the Personality Assessment Inventory-Borderline Features Scale. RESULTS: BD II patients showed significantly higher BPP. Emotional abuse and neglect were prominently associated with BPP, while affective instability and negative relationships exhibited a stronger association with childhood trauma. We also found a positive relationship between childhood trauma and BPP in MDD, BD I, and BD II patients. CONCLUSION: The findings of the present study imply that BPP features are more likely to be found in patients with BD II than BD I or MDD. Mood disorder patients with severe childhood trauma may have higher BPP features. Thus, further study of the relationship between childhood trauma and BPP features could improve the therapeutic approaches and help understand patients with mood disorders.

Childhood trauma in bipolar disorder: new targets for future interventions.

Childhood trauma, particularly emotional abuse, is prevalent in bipolar disorder, and affective instability mechanistically explains the relationship between childhood trauma and poor bipolar disorder outcomes. Yet, trauma-focused interventions in bipolar disorder are lacking. This editorial calls for future early interventions to target the effects of childhood trauma and affective instability in this population.

Pinpointing affective disturbances in psychosis: A comparison of temporal affect dynamics in individuals with psychotic disorders, individuals with attenuated psychotic symptoms, and clinical and healthy controls.

Affective disturbances in psychosis are well-documented but our understanding of their phenotypic nature in everyday life remains limited. Filling this gap could advance mechanistic models of the affective pathway to psychosis and pave the ground for new research avenues. Therefore, this study focused on temporal affect dynamics in psychosis, i.e., the patterns with which affect fluctuates over time. We applied experience-sampling with nine assessments per day over one week in participants with psychotic disorders (PSY), participants with attenuated psychotic symptoms (AS), clinical controls with obsessive compulsive disorders (OCD) and healthy controls (HC; total N = 139) to assess whether in PSY and AS, dynamics in affective valence and arousal are characterized by higher instability (i.e., extreme and frequent moment-to-moment fluctuations of affect intensities), higher affective variability (i.e., larger range of affect intensities), or lower inertia (i.e., higher frequency of affective changes), compared to the clinical and healthy control samples. Mixed-model ANOVAs revealed higher instability in both PSY and OCD compared to HC, but no significant differences for variability and inertia. AS had an intermediate position and did not differ significantly from any other group. We found evidence for small to medium effect sizes for the influence of mean affect levels on the dynamic indicators. Our findings indicate that individuals with psychotic disorders have increased affective instability and that this could be a transdiagnostic phenomenon. Zooming in on the variability and inertia components did not confer additional benefits. Emotion-focused interventions for psychosis should focus on reducing frequent and extreme affective fluctuations.

The association between variability, intensity, and persistence of suicidal ideation and prospective suicidal behavior in the systematic treatment enhancement program for bipolar disorder (STEP-BD) study.

BACKGROUND: This study sought to examine the association between prospective suicidal behavior and variability, intensity, and persistence of suicidal ideation (SI) in bipolar disorder (BD). METHODS: Data were drawn from the Systematic Treatment Enhancement Program for Bipolar Disorder (STEP-BD), a naturalistic study of 4360 outpatients 15 years or older with BD. In separate models, logistic regressions with suicidal behavior (first attempt or death by suicide) as the outcome variable and SI variability (fluctuating levels of SI over time, measured as ordinal dispersion of SI score), intensity (median SI score over time in study), or persistence (number of visits with reported SI) as the explanatory variables were used to examine the relationship between SI characteristics and odds of future suicidal behavior events. RESULTS: After adjusting for possible confounders, the odds of prospective suicidal behavior were 1.2 times greater per 10% increase in SI variability. SI persistence was not associated with suicidal behavior. For SI intensity, a median SI score of 'rare/fleeting' or 'several days' of SI was not associated with suicidal behavior, but the odds of prospective suicidal behavior were nearly five times greater for participants with the highest observed median SI intensity score of 'nearly every day'. CONCLUSIONS: The findings suggest that, in BD participants, monitoring SI variability may be clinically useful for assessing suicide risk.

Eating disorders and the nine symptoms of borderline personality disorder: A systematic review and series of meta-analyses.

OBJECTIVE: Eating disorders and borderline personality disorder have high rates of comorbidity. However, the extent to which individual BPD symptoms are elevated in patients with EDs is largely unknown. Meta-analyses examined: (1) which of the nine BPD symptoms are especially elevated in individuals with versus without EDs, (2) whether particular ED subtypes have elevated levels of certain BPD symptoms, and (3) which BPD symptoms remain unstudied/understudied in relation to EDs. METHODS: We performed nine separate meta-analyses (one for each BPD symptom) to compare levels of symptoms in patients with EDs versus healthy controls. A total of 122 studies (range = 4-34 studies across symptoms) were included. RESULTS: Affective instability was the BPD symptom most elevated, while anger was the BPD symptom least elevated, in patients with EDs compared to controls. When comparing effect sizes across ED subtypes, anorexia nervosa binge-eating/purging subtype had the largest effect sizes for the greatest number of BPD symptoms, while effect sizes for AN restrictive subtype were not significantly larger than those of other EDs for any BPD symptom. The least studied BPD symptoms were identity disturbance and interpersonal difficulties. DISCUSSION: These meta-analyses suggest that certain symptoms of BPD play a more prominent role in the comorbidity between BPD and EDs than others. Targeting affective instability when treating cases of comorbid ED and BPD may be especially likely to ameliorate the negative outcomes related to this comorbidity. Future research should further investigate identity disturbance and interpersonal difficulties in the context of EDs. PUBLIC SIGNIFICANCE: Having an eating disorder and borderline personality disorder is a common comorbidity associated with a severe clinical presentation. BPD is characterized by nine distinct symptoms. This research examined levels of individual BPD symptoms in patients with versus without EDs. Findings can guide researchers and clinicians towards studying and treating symptoms that may be most relevant for BPD-ED comorbidity and in turn, improve outcomes for these patients.

OBJETIVO: Los trastornos de la conducta alimentaria (TCA) y el trastorno límite de la personalidad (TLP) tienen altas tasas de comorbilidad. Sin embargo, se desconoce en gran medida hasta qué punto los síntomas individuales del TLP están elevados en pacientes con TCA. Este metaanálisis examinó: (1) cuál de los nueve síntomas de TLP está especialmente elevado en individuos con TCA versus sin TCA, (2) si los subtipos particulares de TCA tienen niveles elevados de ciertos síntomas de TLP, y (3) qué síntomas de TLP permanecen sin estudiar/poco estudiados en relación con los TCA. MÉTODOS: Se realizaron nueve metanálisis separados (uno para cada síntoma de TLP) para comparar los niveles de síntomas en pacientes con TCA versus controles sanos. Se incluyeron un total de 122 estudios (rango = 4-34 estudios entre los síntomas). RESULTADOS: La inestabilidad afectiva fue el síntoma de TLP más elevado, mientras que el enojo fue el síntoma de TLP menos elevado, en pacientes con TCA en comparación con los controles. Al comparar los tamaños del efecto entre los subtipos de TCA, la anorexia nervosa (AN) subtipo atracón/purgación tuvo los tamaños de efecto más grandes para el mayor número de síntomas de TLP, mientras que los tamaños del efecto para la AN subtipo restrictivo no fueron significativamente mayores que los de otros TCA para cualquier síntoma de TLP. Los síntomas de TLP menos estudiados fueron alteración de la identidad y dificultades interpersonales. DISCUSIÓN: Estos metanálisis sugieren que ciertos síntomas de TLP juegan un papel más prominente que otros en la comorbilidad entre el TLP y los TCA. Enfocarse en la inestabilidad afectiva al tratar casos de TCA y TLP comórbidos puede ser especialmente probable que mejore los resultados negativos relacionados con esta comorbilidad. Los estudios de investigación futuros deben investigar más a fondo la alteración de la identidad y las dificultades interpersonales en el contexto de los TCA.

Affective Instability and Emotion Dysregulation as a Social Impairment.

Borderline personality disorder is a complex psychopathological phenomenon. It is usually thought to consist in a vast instability of different aspects that are central to our experience of the world, and to manifest as "a pervasive pattern of instability of interpersonal relationships, self-image, and affects, and marked impulsivity" [American Psychiatric Association (APA), 2013, p. 663]. Typically, of the instability triad-instability in (1) self, (2) affect and emotion, and (3) interpersonal relationships-only the first two are described, examined, and conceptualized from an experiential point of view. In this context, disorders of self have often motivated analyses of self-experience and the sense of self, affective disorders have been frequently considered in the light of emotional experience and its phenomenological structure. Patterns in the phenomenology of social experience have found comparatively little traction when it comes to the conceptualization of the interpersonal disturbances in borderline. In this paper, I argue that interpersonal instability in borderline consists in much more than fragile and shifting relationships but, most importantly, also involves certain styles in experiencing others. These styles, I suggest, may play an explanatory role for the borderline-typical patterns of interpersonal turmoil and so deserve more attention. To better describe and understand these styles, I explore the phenomenological structure of borderline affective instability and discuss the implications it might have for how a person experiences and relates to other people. Considering core aspects of borderline affective instability, such as alexithymia, emotional contagion, emotion dysregulation, and chronic emptiness, I propose borderline can be interpreted as a disturbance of interaffective exchange, which gives rise to certain ways of experiencing others that imply a social impairment.

Affective Instability, Depression, and Anxiety Symptoms in a Community Sample of Pregnant and Postpartum Women: A Cross-Sectional Study.

BACKGROUND: Although perinatal women experience an elevated level of affective instability (AI), limited research has been conducted to examine perinatal AI and its relation to depression and anxiety. The current study investigated correlations between AI and depression, between AI and anxiety during the perinatal period, and between current depression and anxiety and the latent factors of the Affective Lability Scale-18 (ALS-18). METHODS: 202 Canadian perinatal women participated in this cross-sectional study. The ALS-18 was used to assess AI, while the Depression, Anxiety, and Stress Scale-21 measured depression, anxiety, and stress. Multiple logistic regression was performed to investigate the relationship between AI and depression and anxiety, and multiple linear regression was conducted to examine the association between current depression and anxiety and the three latent factors of ALS-18. RESULTS: The findings revealed a significant association between AI and depression and between AI and anxiety. Current depression and anxiety were correlated with ALS-18 factors of depression/anxiety shift and depression/elation shift, while current depression was linked to ALS-18 factor of anger. CONCLUSIONS: The study findings have important implications for early detection and intervention of maternal anxiety and depression. In order to improve maternal mental health, AI should be included in routine perinatal check-ups.