Hair cortisol and dehydroepiandrosterone and their associations with optimism and pessimism in older people.

The cumulative negative effects of prolonged Hypothalamic-Pituitary-Adrenal axis (HPA axis) activation are associated with several age-related diseases. Some psychological traits such as optimism and pessimism have been shown to be related to both health and the stress response, although their relationship with the HPA axis is inconclusive. More stable HPA axis biomarkers, such as hair samples of cortisol (HC) and dehydroepiandrosterone (HDHEA), would help to clarify the association between these psychological traits and HPA axis functioning. The main aim of this study was to test the relationships between optimism and pessimism and chronic stress biomarkers measured in hair (HC and HDHEA). Additionally, a secondary objective was to explore sex differences in HC and HDHEA levels and their relationship with these psychological traits. We measured optimism, pessimism, and their combination (dispositional optimism) using the Life Orientation Test Revised (LOT-R) and chronic stress biomarkers (HC and HDHEA) in 119 healthy participants (46 men and 73 women) between 56 and 81 years old who belonged to a university program. Regression analyses controlling for perceived stress and BMI indicated that higher dispositional optimism was related to lower HC and HC:HDHEAratio (ß = -0.256, p = .008 and ß = -0.300, p = .002, respectively). More specifically, higher pessimism was related to higher HC (ß = 0.235; p = .012) and HC:HDHEAratio (ß = 0.240; p = .011), whereas higher optimism was associated with a lower HC:HDHEAratio(ß = -0.205; p = .031). Moderation analyses showed no sex differences. To date, this is the first study to investigate the link between these traits and HC and HDHEA in older people. Our results confirm that positive and negative expectations about the future (i.e. optimism and pessimism) may play an important role in health due to their relationship with the HPA axis. They also strengthen the idea that the negative effects of pessimism have a greater weight than the protective effects of optimism in their relationship with HPA axis regulation.

Are lateralized and bold fish optimistic or pessimistic?

Cognitive bias is defined as the influence of emotions on cognitive processes. The concept of the cognitive judgement bias has its origins in human psychology but has been applied to animals over the past 2 decades. In this study we were interested in determining if laterality and personality traits, which are known to influence learning style, might also be correlated with a cognitive bias in the three-spined sticklebacks (Gasterosteus aculeatus). We used the judgement bias test with the go/no-go procedure where fish were first trained to discriminate between a black and white card and, after reaching a minimum learning criterion, tested their response to an ambiguous card (grey). Optimistic subjects were expected to have a high expectation of reward associated with an ambiguous stimulus, whereas pessimistic subjects a high expectation of non-reward. We used an emergence and a mirror test to quantify boldness and laterality, respectively. We hypothesised that male, bolder and more strongly lateralized fish would be more optimistic than female, shy and less strongly lateralised fish. We found that males and more strongly lateralized fish were more optimistic than females and less strongly lateralized fish. In addition, bold males were more optimistic than shy males as we predicted, but females showed the opposite pattern. Finally, fish trained on the black colour card learned the training task faster than those trained on a white card. Our results indicate that both laterality and personality traits are linked to animals' internal states (pessimistic or optimistic outlooks) which likely has broad implications for understanding animal behaviour particularly in a welfare context.

The effect of repeated testing on judgement bias in domestic dogs (Canis familiaris).

Judgement bias paradigms are increasingly being used as a measure of affective state in dogs. Approach to an ambiguous stimulus is commonly used as a measure of affect, however, this may also be influenced by learning. This study directly measured the impact of learning on a commonly used judgement bias paradigm in the absence of an affective state manipulation. Dogs (N = 15) were tested on a judgement bias task across five sessions. The dogs' latency to approach a bowl placed in one of three ambiguous locations between non-baited (negative) and baited (positive) locations was measured. Results show that session number had a significant effect on the dogs' latencies to reach the ambiguous bowl locations, with post-hoc tests revealing that dogs were significantly slower to approach the locations as the number of sessions increased. Session number also had a significant effect on the number of times the dogs did not approach the bowl within 30 s of being released, with the number of no approaches generally increasing across sessions. When dog identity was included as a fixed effect, a significant effect on latency to approach was found, suggesting that some dogs were consistently faster than others across sessions. To assess whether the paradigm produced repeatable results, Intraclass Correlation Coefficients were used. A low degree of reliability was found between latencies to approach each bowl position across sessions. This study demonstrates that dogs learned that the ambiguous locations were not rewarded with repeated exposures, and that this impacted their responses. We conclude that this judgement bias paradigm may require further consideration if applied across multiple exposures and that repeated results should be interpreted with caution as they are likely impacted by learning.

Optimism and pessimism as predictors of seizure group among patients with intractable seizure disorders.

The purpose of this study was to investigate the validity of the Revised Optimism-Pessimism Scale (PSM-R) as a measure of attributional style, and the incremental utility of optimism and pessimism as predictors of seizure group, in an intractable seizure disorder sample. Participants included adult patients with epileptic seizures (ES; n = 151) and psychogenic nonepileptic seizures (PNES; n = 173) whose diagnoses were confirmed by prolonged video/EEG monitoring (PVEM). Optimism and pessimism scores were computed from abbreviated versions of the MMPI for all participants. Analyses were conducted to examine the relationships between optimism, pessimism, and MMPI clinical scale scores. Logistic regression analyses were conducted to generate a model for the prediction of seizure group. Results supported the validity of the PSM-R as a measure of attributional style in an intractable seizure disorder sample. Both optimism and pessimism provided significant incremental predictive utility over and above other predictors of seizure group. There are advantages of using the proposed prediction model over other alternative differential diagnostic procedures, including lower cost, greater availability, and increased standardization. Overall, results indicated that attributional style is a clinically relevant index of personality and cognitive response to stress among an intractable seizure disorder sample.

Examining intra- and inter-personal health effects of optimism and pessimism: The role of subjective well-being in romantic couples.

INTRODUCTION: Recent meta-analytic research suggests that the absence of pessimism could be a stronger predictor of physical health than the presence of optimism. The present study examined the role of subjective well-being in the effects of optimism and pessimism on physical health in romantic couples. It was hypothesized that pessimism would be more strongly associated with both well-being and health than optimism, intra- and interpersonally. Subjective well-being was also expected to explain variance in the associations between optimism, pessimism, and health. METHODS: A baseline sample of 153 opposite-sex couples completed various measures of subjective well-being (e.g., life satisfaction, positive and negative affect, and depressive symptoms) and physical health (e.g., subjective health, sleep efficiency, physical symptoms, cold symptoms, and chronic illness). RESULTS: Results of actor-partner interdependence models showed that the absence of pessimism, but not the presence of optimism, was associated with better physical health at baseline and over time. Pessimism was also a stronger predictor than optimism of baseline levels in some indicators of subjective well-being. These effects were obtained intra- and interpersonally. Finally, subjective well-being explained variance in some of the effects of pessimism on levels of physical health. Implications for theory, research, and practice are discussed.

The relationship between optimism, MCI, and dementia among postmenopausal women.

OBJECTIVES: The relationship between optimism and cognitive functioning is not fully understood. We examined the association of optimism with risk of mild cognitive impairment (MCI) and dementia in the Women's Health Initiative Memory Study (WHIMS). METHODS: Optimism was measured by the Life Orientation Test-Revised (LOT-R) total score, and optimism and pessimism subscales. A panel of experts adjudicated cognitive endpoints based on annual cognitive assessments. We used cox proportional hazard regression models to examine the association of LOT-R total score and optimism and pessimism sub-scores with MCI/dementia. We also examined the relationship between vascular disease, LOT-R total score, optimism and pessimism, and cognition. RESULTS: Mean age was 70.5 (SD = 3.9) years. The sample (N = 7249) was 87% white, and 29.8% of participants had < 12 years of education. Total LOT-R score (HR = 0.96, 95% CI: 0.94, 0.98, p < 0.001) was associated with lower risk of combined MCI or dementia. More pessimism (HR = 1.08, 95% CI: 1.05, 1.11, p < 0.0001) was associated with higher risk of MCI or dementia after adjustment for ethnicity, education, vascular disease, and depression. No significant relationships emerged from the optimism subscale. CONCLUSION: These data suggest that less pessimism, but not more optimism, was associated with a lower risk of MCI and dementia.

Optimism and pessimism are antithetically associated with post-operative knee function in patients' undergoing total knee arthroplasty.

PURPOSE: Personality traits, such as dispositional optimism and pessimism, have impact on a variety of health-related problems. Influence on outcome in total knee arthroplasty (TKA) could only be shown for other personality trait concepts, but not for dispositional optimism/pessimism. This study aims to examine the association of dispositional optimism/pessimism with pre-operative joint function and post-operative outcome in TKA. METHODS: Data were acquired in a multicentre, cross-sectoral, prospective study (the PROMISE Trial). Patients were followed for 12 months post-operatively. Dispositional optimism/pessimism was measured pre-operatively via the revised Life Orientation Test (LOT-R), pre- and post-operative function was measured via the 12 Item Knee-osteoarthritis outcome Scores (KOOS-12). Log-linear regression models considering known confounders and t-test were carried out to show the association of LOT-R scores with pre- and post-operative KOOS-12 scores. RESULTS: 740 patients were analyzed. Optimistic LOT-R was significantly positively associated to the mean scores of KOOS-12 pre- and post-operative, while pessimistic LOT-R was significantly associated negatively (pre-operative: optimistic p = 0.001, pessimistic p = 0.001; post-operative optimistic: 3M p = 0.001, 6M p = 0.001, 12M p = 0.001; post-operative pessimistic: 3M p = 0.01, 6M p = 0.004, 12M p = 0.001). CONCLUSION: Optimism was positively associated with pre-operative joint function and, more importantly, post-operative functional outcome in TKA, while pessimism was associated with the opposite. Assessing patients' general personality traits prior to surgery to identify pessimistic patients, hence being at risk for poor outcome in TKA, should be considered to react to the patients' special needs and possible pessimistic expectations, i.e., through a cognitive-behavioral intervention, to potentially increase optimism and hereby post-operative outcome in TKA. LEVEL OF EVIDENCE: Prognostic Level III.

Can a Pessimistic Outlook Moderate the Victimization-Delinquency Relationship?

This study was designed to shed light on the relationship between victimization and offending, a pattern commonly known as the victim-offender overlap, by exploring whether victimization and pessimism toward the future interact in association with self-reported delinquency. This study was performed on 1,300 (444 males, 645 females, and 211 sex not identified) members of the 2018 High School Senior Monitoring the Future cross-sectional study. Multiple regression analysis was conducted using a maximum likelihood estimator and bias-corrected bootstrapped 95% confidence intervals. The analysis revealed that victimization and the victimization × pessimism interaction correlated significantly with delinquency, after controlling for a series of demographic, family, and peer factors. These results indicate that pessimism toward the future may exacerbate the already strong relationship known to exist between victimization and delinquency.

A promising novel judgement bias test to evaluate affective states in dogs (Canis familiaris).

The judgement bias test represents one of the most applied tools to evaluate animals' optimistic/pessimistic attitude and to infer their emotional and welfare state accordingly. The judgement bias test (JBT) has been used several times with dogs (Canis familiaris), in most cases using a spatial test that evaluates the dog's attitude towards a bowl placed in ambiguous positions (located between two unambiguous trained positions associated with opposite outcomes). Results are contrasting and methodological and statistical caveats emerged: dogs struggled to learn the association between unambiguous positions and their outcomes, they hardly discriminated between adjacent locations and they might be influenced by researchers. Therefore, we propose a novel paradigm, aimed at easing the learning process and at achieving more reliable measures. Improvements of the novel paradigm are the increased difference between payoffs of trained locations, the reduction of the number of trials and of their length and the removal of the potential influence of researchers. Results showed that 98% of dogs reached the learning criterion and that their learning appeared more stable: dogs behaved differently between the two trained stimuli and the variability of responses towards these stimuli was lower than the one towards ambiguous stimuli. Behavioural analyses confirmed that dogs fully learned outcomes associated with trained stimuli and that they were hesitant towards ambiguous stimuli. Furthermore, dogs managed to successfully discriminate between each pair of adjacent locations. These results suggest that this protocol is a promising tool to assess judgement biases in dogs and to evaluate their affective state.

Pessimistic cognitive bias is associated with enhanced reproductive investment in female zebrafish.

Optimistic and pessimistic cognitive biases have been described in many animals and are related to the perceived valence of the environment. We, therefore, hypothesize that such cognitive bias can be adaptive depending on environmental conditions. In reward-rich environments, an optimistic bias would be favoured, whereas in harsh environments, a pessimistic one would thrive. Here, we empirically investigated the potential adaptive value of such bias using zebrafish as a model. We first phenotyped female zebrafish in an optimistic/pessimistic axis using a previously validated judgement bias assay. Optimistic and pessimistic females were then exposed to an unpredictable chronic stress protocol for 17 days, after which fish were euthanized and the sectional area of the different ovarian structures was quantified in both undisturbed and stressed groups. Our results show that zebrafish ovarian development responded to chronic stress, and that judgement bias impacted the relative area of the vitellogenic developmental stage, with pessimists showing higher vitellogenic areas as compared with optimists. These results suggest that pessimism maximizes reproductive investment, through increased vitellogenesis, indicating a relationship between cognitive bias and life-history organismal decisions.

Coping with cancer: the role of different sources of psychosocial support and the personality of patients with cancer in (mal)adaptive coping strategies.

OBJECTIVES: Cancer is a serious event in a person's life. However, certain coping strategies in relation to selected social, emotional, and personality factors appear to manage the disease. METHODS: Sources of social support were tested in cancer survivors (N = 696) using hierarchical linear regression. Selected personality variables in terms of sociodemographic, clinical, and emotional factors were used as predictors of adaptive and maladaptive coping strategies. RESULTS: It was found that adaptive coping strategies were more frequent in younger patients, in patients who attended cancer support groups and those with a greater level of optimism. Maladaptive coping was related to the higher level of experience of pain and sadness, neuroticism, and pessimism. The absence of a relapse and the time since the disease had been diagnosed were also important factors in coping with cancer. CONCLUSIONS: The results point to the importance of considering various individual factors in the process of intervention to facilitate adaptive coping and to reduce maladaptive coping.

Optimism, pessimism and support in older couples: A longitudinal study.

OBJECTIVES: Optimism is linked to varied advantageous outcomes, ranging from improved health to better relationships, while pessimism is linked to reduced well-being. Relatively little is known about how optimism and pessimism may work together to shape the perception of support within marital relationships, and whether perceived support can affect couple-members' optimism and pessimism. METHOD: We used three waves of a nationally representative sample of older couples (N = 1681 couples), spanning a period of eight years. Partners reported perceived support, optimism, and pessimism in each wave. We used a random-intercept cross-lagged panel model (RI-CLPM) to test within- and between-person effects. RESULTS: At the within-person level, husbands', but not wife's, future expectations were associated with partners' perceived marital support; increases in husbands' pessimism on a given wave were related to decreases in husbands' perceived marital support at the next wave, and vice versa (i.e., actor effect). Within the same wave, increases in husbands' pessimism were associated with wives' decreased perceived marital support. At the between-person level, both partners' optimism and pessimism were associated with marital support. DISCUSSION: Findings suggest that changes in husbands' levels of pessimism propel marital support experiences of both partners. At the methodological level, results highlight the importance of examining interpersonal processes at both the within- and between-levels of analyses, as they may yield divergent patterns.

The moderating role of pessimism in the association between retrospective relational peer victimization, interpersonal risk factors, and suicide ideation.

Peer victimization (PV) is a serious concern for youth and is associated with subsequent suicide ideation in young adulthood. The interpersonal theory of suicide may provide a framework for understanding suicide ideation in this population. Specifically, thwarted belongingness (TB) and perceived burdensomeness (PB) have been significantly associated with suicide ideation among young adults with a history of peer victimization. Additionally, the personality trait of pessimism is associated with elevated suicide ideation. Thus, this study tested the association between self-reported frequency of retrospective relational (i.e., verbal and indirect) PV in primary and secondary school, thwarted interpersonal needs (TB and PB), and current suicide ideation, as well as how these relations may vary based on current pessimism. Participants were 330 undergraduate students. Nonparametric bootstrap moderated mediation procedures were used to test hypotheses. Results indicated significant indirect effects of frequency of retrospective relational PV and suicide ideation through PB and TB. Contrary to predictions, results did not indicate significant moderated mediation; however, the association between PB and suicide ideation was stronger at lower pessimism levels. We also provide supplemental analysis with optimism as the moderator. These findings suggest that clinicians may consider targeting TB, PB, as well as pessimism and optimism among those with a history of relational PV when assessing and intervening on current suicide ideation. Implications, limitations, and future directions are further discussed.

Optimism and pessimism mediate the association between parental coronavirus anxiety and depression among healthcare professionals in the era of COVID-19.

Identifying factors related to healthcare professionals' mental health has become an imperative topic for offering mental health services to foster their psychological functioning. This study, for the first time, examined the mediating role of optimism and pessimism in the association between parental coronavirus anxiety and depression among Turkish healthcare professionals during the COVID-19 pandemic. Participants included 429 healthcare professionals whose age ranged between 22 and 61 years (50.3% female; M = 36.65, SD = 7.0). Results from mediation analysis revealed that parental coronavirus anxiety had a significant predictive effect on optimism, pessimism, and depression. Optimism and pessimism also had significant predictive effects on depression. Most importantly, optimism and pessimism mitigated the adverse impact of parental coronavirus anxiety on healthcare professionals' depression. The findings suggest that optimism is an essential source in reducing depression symptoms in the face of parental coronavirus experiences. Decision-makers and health organizations may integrate strength-based approaches into their guidelines to address parental coronavirus anxiety and depression.

Estimated probabilities of positive, vs. negative, events show separable correlations with COVID-19 preventive behaviours.

Research has associated optimism with better health-protective behaviours, but few studies have measured optimism or pessimism directly, by asking participants to estimate probabilities of events. We used these probability estimates to examine how optimism and/or pessimism relate to protecting oneself from COVID-19. When COVID-19 first reached Turkey, we asked a snowball sample of 494 Istanbul adults how much they engaged in various COVID-protective behaviours. They also estimated the probabilities of their catching COVID-19, and of other positive and negative events happening to them. Estimated probability of general positive events (optimism) correlated positively with officially-recommended helpful behaviours (e.g. wearing masks), but not with less-helpful behaviours (e.g. sharing 'alternative' COVID-related information online). Estimated probabilities of general negative events (pessimism), or of catching COVID, did not correlate significantly with helpful COVID-related behaviours; but they did correlate with psychopathological symptoms, as did less-helpful COVID-related behaviours. This shows important nuances can be revealed by measuring optimism and pessimism, as separate variables, using probability estimates.

If You Must Give Them a Gift, Then Give Them the Gift of Nonexistence.

I present a qualified new defense of antinatalism. It is intended to empower potential parents who worry about their possible children's life quality in a world threatened by environmental degradation, climate change, and the like. The main elements of the defense are an understanding of antinatalism's historical nature and contemporary varieties, a positional theory of value based on Epicurean hedonism and Schopenhauerian pessimism, and a sensitive guide for reproductive decision-making in the light of different views on life's value and risk-taking. My conclusion, main message, to the concerned would-be parents is threefold. If they believe that life's ordinary frustrations can make it not worth living, they should not have children. If they believe that a noticeably low life quality makes it not worth living and that such life quality can be reasonably expected, they should not have children, either. If they believe that a noticeably low life quality is not reasonably to be expected or that the risk is worth taking, they can, in the light of their own values and beliefs, have children. The conclusion is supported by a combination of the extant arguments for reproductive abstinence, namely the arguments from consent, moral asymmetry, life quality, and risk.

Mobile shoppers' response to Covid-19 phobia, pessimism and smartphone addiction: Does social influence matter?

Because of the Covid-19 pandemic, there has been a variety of changes identified in customers' shopping behaviours, and development of new practices as a response to the crisis. The purpose of this research is to examine the effects of Covid-19 phobia, and news exposure on individuals' psychological states, and their resulting mobile shopping behaviour. Relying upon the Activate, Belief and Consequences (ABC) model of the Cognitive-Behaviour Theory, this research applies the partial least square structural modelling (PLS-SEM) methodology for analysing the data from 302 mobile shoppers from India. The results confirm that Covid-19 phobia and Covid-19 news exposure are substantial determinants of consumers' smartphone addictive use and pessimism, which in turn affect mobile shopping frequency. Additionally, social influence is found to play a vital role in moderating mobile shopping frequency for individuals, who experience smartphone addiction. The current study is a pioneering effort to examine the influence of Covid-19-induced phobia on consumers' psychological states and their subsequent impact on their mobile shopping frequency. The study provides several contributions to theory and practice within the areas of technology use and mobile shopping in particular.

The role of emotional functioning in the relationship between health anxiety and cyberchondria.

Access to health information can have positive effects in the form of increased health awareness. However, self-diagnosis based on information available on websites can be dangerous, causing distress as an increasing amount of time is spent on searching. The main aim of the study was to determine the role of emotional functioning in the relationship between health anxiety and cyberchondria. The study included N = 615 participants aged 18 to 83 years (M = 43.86, SD = 14.57). The authors used the Cyberchondria Severity Scale, the Short Health Anxiety Inventory, the Life Orientation Test, the Difficulties in Emotion Regulation Scale, and the Kessler 6 Psychological Distress Scale. The results demonstrate that health anxiety is significantly related to cyberchondria and that pessimism and difficulties in emotion regulation act as mediators in this relationship. Supplementary Information: The online version contains supplementary material available at 10.1007/s12144-022-04126-3.

The influence of pessimism on adverse network behavior during COVID-19: the mediating effect of negative affect and risk perception.

There had been an information epidemic during the COVID-19, which led to a lot of adverse network behavior among Internet users. From the perspective of cognition and emotion, this study focused on exploring the influence mechanism of pessimism on undergraduates' adverse network behavior, and introduced the mediating variable of negative affect and risk perception. In this study, a cross-sectional questionnaire was used to evaluate pessimism, negative affect, risk perception and adverse network behavior of undergraduates to explore the characteristics of network behaviors of undergraduates during the COVID-19. 600 undergraduates from three universities in a city in China were selected as participants, among whom 312 students are female and 288 students are male. The results are as follows: (1) Pessimism is positively correlated with adverse network behavior, and pessimism has a significant positive effect on adverse network behavior. (2) Pessimism is positively correlated with negative affect, and negative affect is positively correlated with adverse network behavior. The mediating effect analysis shows that the mediating effect of negative affect on the relationship between pessimistic personality and adverse network behavior has statistical significance. (3) Pessimism is positively correlated with risk perception and risk perception is positively correlated with adverse network behavior. The mediating effect analysis shows that the mediating effect of risk perception on the relationship between pessimistic personality and adverse network behavior has statistical significance. Supplementary Information: The online version contains supplementary material available at 10.1007/s12144-022-03584-z.

Pessimism and Optimism in the Debate on Climate Change: A Critical Analysis.

In the debate on climate change commentators often express pessimistic or optimistic views. We see this mainly in the media and popular literature, but also in various academic fields. The aim of this paper is to investigate different kinds of pessimistic and optimistic views put forward in this debate and suggest explanations of the diversity of views. The paper concludes that pessimism and optimism may concern, for example, climate change as an unmitigated or poorly mitigated process, mitigation of climate change or specific measures of mitigation. These aspects are important to distinguish, because a person can be pessimist concerning climate change as an unmitigated or poorly mitigated process and optimist concerning mitigation of climate change, and be pessimist concerning one specific mitigation measure and optimist concerning another. It is suggested that the diversity of pessimistic and optimistic views is due to the uncertainty of scientific climate models and the influence of evaluative and ideological assumptions.