A good architecture for fast and slow thinking, but exclusivity is exclusively in the past.

No doubt older work in the dual-process tradition overemphasized the importance and frequency of the override function, and the working model in this target article provides a useful corrective. The attempt to motivate the model using the so-called exclusivity assumption is unnecessary, because no recent dual-process model in the reasoning literature has rested strongly on this assumption.

Temperament Profiles Associated with Internalizing Symptoms and Externalizing Behavior in Adolescents with ADHD.

The current study investigated temperament profiles associated with internalizing symptoms and externalizing behavior in adolescents with ADHD. Participants were 121 adolescents (90 males) with ADHD, ranging in age from 13 to 18 years (M = 15.40, SD = 1.59). Emotional and behavioral ratings were obtained using the Strengths and Difficulties Questionnaire (SDQ) and temperament profiles were assessed by administering the Temperament and Character Inventory (TCI). Multivariate profile analyses and post hoc tests revealed that youth high in internalizing symptoms were significantly higher in harm avoidance and lower in self-directedness. Youth high in externalizing behavior were significantly lower in cooperativeness. No cognitive differences were observed across groups, but youth high in externalizing behavior had more ADHD symptoms and greater impairment in daily life. Findings reveal unique temperament factors associated with comorbid concerns, which may have implications for adapting and personalizing intervention efforts based on these different profiles within adolescents with ADHD.

Anticipated, experienced, and remembered subjective effort and discomfort on sustained attention versus working memory tasks.

This study examined individuals' ability to accurately anticipate how cognitively effortful and uncomfortable a task will feel based on a short sample of the task. Participants completed a sustained attention or working memory task. Post-practice, participants rated the effort and discomfort that they anticipated their task would require and engender, respectively. Participants also rated their effort and discomfort during task-administration and the effort and discomfort they recalled feeling after task-administration. Sustained attention task participants anticipated significantly less effort than working memory task participants. Sustained attention task participants felt significantly more effort during the task and remembered feeling more effort than they had anticipated. Working memory task participants felt significantly less effort during the task than they had anticipated. Sustained attention task participants anticipated, experienced, and recalled feeling more discomfort than working memory task participants. Individuals' anticipation of effort required depends on the task and is different from the effort they actually feel during the task and later recall feeling.

Interactions between levels of attention ability and levels of bilingualism in children's executive functioning.

Attention difficulty is associated with poor performance on executive functioning (EF) tasks, yet EF is enhanced in bilingual children. However, no research to date has investigated the possible interaction between bilingualism and attention ability in children to determine the consequences for EF when both are present. We assessed a sample of typically developing children who were 8 to 11 years old for their ability in attention control and level of bilingualism on the basis of questionnaires completed by parents and teachers. Children performed three tasks requiring aspects of EF: stop signal task (inhibition), flanker task (interference control), and frogs matrices task (spatial working memory). Results from hierarchical regressions confirmed that both attention ability and bilingualism contributed to performance on the EF tasks. Where interaction effects were significant, they showed that attention ability was a stronger predictor for an inhibition task, namely stop signal, and bilingualism a stronger predictor for an interference task, namely flanker. Furthermore, these results allow us to discuss the relation between EF and attention ability.

Adult attention deficit hyperactivity disorder symptom profiles and concurrent problems with alcohol and cannabis: sex differences in a representative, population survey.

BACKGROUND: Adult attention deficit hyperactivity disorder (ADHD) shows a robust association with alcohol and cannabis misuse, and these relationships are expressed differently in males and females. Manifestation of specific ADHD symptom profiles, even in the absence of the full disorder, may also be related to problems with alcohol and cannabis, although these relationships have not been investigated in epidemiological studies. To address this question, we studied the sex-specific associations of ADHD symptomatology with problematic alcohol and cannabis use in a representative sample of adults aged 18 years and older residing in Ontario, Canada. METHODS: Data were obtained from the Centre for Addiction and Mental Health Monitor, an ongoing cross-sectional telephone survey, between January 2011 and December 2013. Respondents (n = 5080) reported on current ADHD symptomatology, measured using the Adult ADHD Self-Report Version 1.1 Screener (ASRS-V1.1) and four additional items, and alcohol and cannabis use, which were measured using the Alcohol Use Disorders Identification Test (AUDIT) and the Alcohol, Smoking and Substance Involvement Screening Test (ASSIST), respectively. Logistic regression analyses were conducted in men and women to test the association of each ADHD symptom cluster (hyperactivity, inattentiveness, impulsivity) with problematic alcohol and cannabis use. RESULTS: After controlling for age, education, and comorbid internalizing and externalizing psychopathology, hyperactive symptoms were associated with problematic alcohol use in both men and women and with problematic cannabis use in men. Impulsive symptoms were independently associated with problematic cannabis use in men. By contrast, inattentive symptomatology predicted problems with alcohol and cannabis only in women. In all models, age was negatively associated with substance misuse and externalizing behavior was positively correlated and the strongest predictor of hazardous alcohol and cannabis use. CONCLUSIONS: ADHD symptom expression in adulthood is related to concurrent hazardous use of alcohol and cannabis. Distinctive ADHD symptom profiles may confer increased risk for substance misuse in a sex-specific manner.

I can't get no satisfaction: potential causes of boredom.

A variety of causes of boredom have been proposed including environmental, motivational, emotional, and cognitive factors. Here, we explore four potential cognitive causes of boredom: inattention, hyperactivity, impulsivity, and executive dysfunction. Specifically, we examine the unique and common associations between these factors and boredom propensity. Recent research has established that the two most commonly used measures of boredom propensity (BPS and BSS) are not measuring the same underlying construct. Thus, a second goal of the present project is to determine the unique and common roles of inattention, hyperactivity, impulsivity and poor executive system functioning in predicting the BPS and BSS specifically. The findings reveal that inattention, hyperactivity and executive dysfunction predict boredom propensity, with shared variance accounting for the greater part of this effect. Further, executive dysfunction and hyperactivity uniquely predict boredom propensity as measured by the BPS and BSS, respectively.

Practitioner review: do performance-based measures and ratings of executive function assess the same construct?

BACKGROUND: Both performance-based and rating measures are commonly used to index executive function in clinical and neuropsychological assessments. They are intended to index the same broad underlying mental construct of executive function. The association between these two types of measures was investigated in the current article. METHOD AND RESULTS: We examined the association between performance-based and rating measures of executive function in 20 studies. These studies included 13 child and 7 adult samples, which were derived from 7 clinical, 2 nonclinical, and 11 combined clinical and nonclinical samples. Only 68 (24%) of the 286 relevant correlations reported in these studies were statistically significant, and the overall median correlation was only .19. CONCLUSIONS: It was concluded that performance-based and rating measures of executive function assess different underlying mental constructs. We discuss how these two types of measures appear to capture different levels of cognition, namely, the efficiency of cognitive abilities and success in goal pursuit. Clinical implications of using performance-based and rating measures of executive function are discussed, including the use of these measures in assessing ADHD.

Actively Open-Minded Thinking and Its Measurement.

Actively open-minded thinking (AOT) is measured by items that tap the willingness to consider alternative opinions, sensitivity to evidence contradictory to current beliefs, the willingness to postpone closure, and reflective thought. AOT scales are strong predictors of performance on heuristics and biases tasks and of the avoidance of reasoning traps such as superstitious thinking and belief in conspiracy theories. Nevertheless, AOT is most commonly measured with questionnaires rather than performance indicators. Questionnaire contamination becomes even more of a danger as the AOT concept is expanded into new areas such as the study of fake news, misinformation, ideology, and civic attitudes. We review our 25-year history of studying the AOT concept and developing our own AOT scale. We present a 13-item scale that both is brief and accommodates many previous criticisms and refinements. We include a discussion of why AOT scales are such good predictors of performance on heuristics and biases tasks. We conclude that it is because such scales tap important processes of cognitive decoupling and decontextualization that modernity increasingly requires. We conclude by discussing the paradox that although AOT scales are potent predictors of performance on most rational thinking tasks, they do not predict the avoidance of myside thinking, even though it is virtually the quintessence of the AOT concept.

The hierarchical factor model of ADHD: invariant across age and national groupings?

OBJECTIVE: To examine the factor structure of attention-deficit/hyperactivity disorder (ADHD) in a clinical sample of 1,373 children and adolescents with ADHD and their 1,772 unselected siblings recruited from different countries across a large age range. Hierarchical and correlated factor analytic models were compared separately in the ADHD and sibling samples, across three different instruments and across parent and teacher informants. Specific consideration was given to factorial invariance analyses across different ages and different countries in the ADHD sample. METHOD: A sample of children and adolescents between 5 and 17 years of age with ADHD and their unselected siblings was assessed. Participants were recruited from seven European countries and Israel. ADHD symptom data came from a clinical interview with parents Parental Account of Childhood Symptoms and questionnaires from parents and teachers (Conners Parent and Teacher). RESULTS: A hierarchical general factor model with two specific factors best represented the structure of ADHD in both the ADHD and unselected sibling groups, and across informants and instruments. The model was robust and invariant with regard to age differences in the ADHD sample. The model was not strongly invariant across different national groups in the ADHD sample, likely reflecting severity differences across the different centers and not any substantial difference in the clinical presentation of ADHD. CONCLUSIONS: The results replicate previous studies of a model with a unitary ADHD component and separable specific traits of inattention and hyperactivity/impulsivity. The unique contribution of this study was finding support for this model across a large developmental and multinational/multicultural sample and its invariance across ages.

Executive function and suicidal risk in women with Borderline Personality Disorder.

A range of executive function (EF) deficits have been associated with Borderline Personality (BPD), a disorder characterized by high rates of suicide. However, the role of EF and suicide risk in BPD has not been examined. This exploratory study compared working memory, Stroop interference, motor inhibition (SSRT) and Iowa Gambling Task (IGT) decision making performance in 42 women with BPD and 41 healthy controls. The sensitivity of EF to suicidal risk as assessed by the Suicide Behaviour Questionnaire-R (Osman et al., 2001) was also tested. Women with BPD performed similar to controls on all EF except decision making. Weaker Stroop interference control, however, was the only significant EF contributor to suicide risk, demonstrating near equivalent contributions to that of depression. EF and depression collectively explained 34% of the adjusted variance in total suicide risk. Contrary to expectations, IGT decision making and motor inhibition were not associated with overall suicide risk. Only Stroop interference control contributed significantly to lifetime suicide intent/attempt beyond depression or BPD severity. As prior suicide attempt remains the strongest predictor of future attempt (Soloff et al., 2003), the sensitivity of stroop performance to suicidal risk may be clinically important. Interference control may represent a "diathesis" for suicide that is independent of psychiatric diagnoses.

Age-Related Variance in Performance versus Ratings of Attention and Impulse Regulation in Children: Implications for the Assessment of ADHD.

Executive function task (EF) deficits are hypothesized to underlie difficulties with self-regulation. However, tasks assessing EF impairments have only been weakly correlated with rating scales that index self-regulation difficulties. A community sample of children and youth aged between 8 and 20 years old were assessed longitudinally. Growth curve analyses and correlations were conducted to better understand how these two types of measures relate to one another across development, as well as the impact of age-related variance. EF was assessed using the Stroop Task and Trail Making test and behavioral ratings of self-regulation were captured using the SWAN scale. EF task performance improved steeply until age 14-15, whereas the SWAN Scale showed small age-related decreases. EF task performance was moderately correlated with age among 8-13-year-olds and to a lesser extent among 14-20-year-olds. SWAN scores were not significantly related to age in either group. Correlations were similar in an ADHD "at-risk" subgroup. EF task performance and parent ratings of attention regulation have different developmental trajectories, which may partly explain why correlations are low to modest in these samples. In particular, age-related variance is an important methodological consideration with significant implications for the assessment of self-regulation in children and youth with ADHD.

A Review of Canadian Diagnosed ADHD Prevalence and Incidence Estimates Published in the Past Decade.

(1) Background: ADHD is recognized as one of the most common neurodevelopmental disorders. The worldwide prevalence of ADHD is estimated at 5.3%; however, estimates vary as a function of a number of factors, including diagnostic methods, age, sex and geographical location. A review of studies is needed to clarify the epidemiology of ADHD in Canada. (2) Methods: A search strategy was created in PubMed and adapted for MEDLINE and PsycINFO. Papers were included if they examined diagnosed ADHD prevalence and/or incidence rates in any region of Canada, age group and gender. A snowball technique was used to identify additional papers from reference lists, and experts in the field were consulted. (3) Results: Ten papers included in this review reported on prevalence, and one reported on incidence. One study provided an overall prevalence estimate across provinces for adults of 2.9%, and one study provided an overall estimate across five provinces for children and youth of 8.6%. Across age groups (1 to 24 years), incidence estimates ranged from 0.4% to 1.2%, depending on province. Estimates varied by age, gender, province, region and time. (4) Conclusions: The overall Canadian ADHD prevalence estimate is similar to worldwide estimates for adults. Most studies reported on prevalence rather than incidence. Differences in estimates across provinces may reflect the varying number of practitioners available to diagnose and prescribe medication for ADHD across provinces. To achieve a more comprehensive understanding of the epidemiology of ADHD in Canada, a study is needed that includes all provinces and territories, and that considers estimates in relation to age, gender, ethnicity, geographical region, socioeconomic status and access to mental healthcare coverage. Incidence rates need further examination to be determined.

The Cognitive Reflection Test as a predictor of performance on heuristics-and-biases tasks.

The Cognitive Reflection Test (CRT; Frederick, 2005) is designed to measure the tendency to override a prepotent response alternative that is incorrect and to engage in further reflection that leads to the correct response. In this study, we showed that the CRT is a more potent predictor of performance on a wide sample of tasks from the heuristics-and-biases literature than measures of cognitive ability, thinking dispositions, and executive functioning. Although the CRT has a substantial correlation with cognitive ability, a series of regression analyses indicated that the CRT was a unique predictor of performance on heuristics-and-biases tasks. It accounted for substantial additional variance after the other measures of individual differences had been statistically controlled. We conjecture that this is because neither intelligence tests nor measures of executive functioning assess the tendency toward miserly processing in the way that the CRT does. We argue that the CRT is a particularly potent measure of the tendency toward miserly processing because it is a performance measure rather than a self-report measure.

Using Metacognitive Methods to Examine Emotion Recognition in Children With ADHD.

Objective: This study investigated confidence accuracy associations for emotion recognition (ER) in children with ADHD and typically developing children (TD). Method: Thirty-nine children with ADHD and 42 TD (M = 9 years, 11 months, SD = 14.92 months, 26 females) completed an ER task. Intelligence and executive function task performance were also measured. Results: The ADHD group was more confident on ER compared with TD, but no group differences were found on their overall accuracy. Specifically, the ADHD group was more confident in its recognition of sad and angry faces compared with the TD group. On a metacognitive index, the ADHD group displayed lower resolution, suggesting that the TD group was better at discriminating correct from incorrect responses. Higher resolution was associated with lower ADHD symptoms. Conclusion: Confidence ratings with reference to performance on a specific task can provide an index of social-cognition in children with ADHD.

A Meta-Analytic Review of Sex Differences on Delay of Gratification and Temporal Discounting Tasks in ADHD and Typically Developing Samples.

Objective: To examine whether males and females with ADHD differ in their preferences for delayed rewards, since there is some evidence that suggests a sex difference with typically developing (TD) samples. Method: We used meta-analyses to examine sex differences on delay of gratification and temporal discounting tasks in both TD and ADHD samples. We identified 28 papers with 52 effect sizes for children and adults, and calculated the average effect size for sex comparisons within TD and ADHD samples. Results: The estimated mean difference between TD males and TD females was negligible, but males with ADHD were more likely to choose the larger delayed rewards than females with ADHD. Meta-regressions indicated that task type, age, and reward type did not significantly predict sex differences. Conclusion: These findings suggest that females referred for ADHD may make less adaptive choices by preferring smaller immediate rewards over larger delayed rewards more often than males with ADHD. Implications of our findings are discussed.

Callous-Unemotional Traits and Executive Functions are Unique Correlates of Disruptive Behavior in Children.

This study examined the influence of executive functions on the association between callous-unemotional traits and severity and type of childhood disruptive behavior. Eighty one children aged 8-12 years and their parents participated in the study. We assessed children's callous-unemotional traits, executive functions, and two indices of disruptive behavior. Callous-unemotional traits and parent ratings of executive dysfunction were uniquely correlated with elevated conduct problems and oppositional and defiant behavior. Neither performance-based measures, nor parent ratings of executive function, moderated the association between callous-unemotional traits and disruptive behavior. Study findings suggest that executive functions and callous-unemotional traits may impact children's behavior independently.

Substrate reduction therapy in juvenile GM2 gangliosidosis.

Substrate reduction therapy (SRT) is considered to be a potential therapeutic option for juvenile GM2 gangliosidosis (jGM2g). We evaluated the efficacy of SRT in jGM2g, assessing neurological, neuropsychological and brain magnetic resonance imaging (MRI) outcomes over a 24-month period of treatment. In an open-label and single-center study, five jGM2g patients (mean age 14.6+/-4.5 years) received oral miglustat at doses of 100-200mg t.i.d. adjusted to body surface area. Patients underwent general and neurological examinations, neuropsychological, electrophysiological, and brain MRI studies. All patients showed neurological deterioration over the period of the study, with particularly notable worsening of gait, speech and coordination. One patient experienced acute psychosis, and another showed worsening of pre-existing epilepsy. Some neuropsychological tests showed no evidence of deterioration in the three patients with high enough cognitive functioning for reliable assessment. Profound cognitive impairment in two children precluded neuropsychological evaluation. In four patients, evaluation of brain MRI showed no changes in white matter signal abnormalities and cerebellar atrophy noted at baseline, while one patient showed progression of cerebellar and supratentorial brain atrophy. Transmission electron microscopy analysis of peripheral mononuclear cells showed reduction of intracytoplasmatic inclusions with treatment. SRT with miglustat of patients with jGM2g failed to ameliorate progressive neurological deterioration, but apparently no worsening of some areas of cognitive function tested and brain MRI lesions was noted over 24 months of treatment. The results must be interpreted with care owing to the small sample of patients and the lack of a control-arm.

Executive and motivational inhibition: associations with self-report measures related to inhibition.

Inhibition involves the withholding or suppressing of attention or responses to irrelevant or distracting stimuli. We examined the relationship between five experimental tasks of inhibition, represented by two measures of executive, intentional control inhibition and three measures of motivational inhibition characterized by bottom-up interruption of affective and reward/punishment sensitive mechanisms. Associations between these experimental tasks with three self-report measures related to inhibition were also examined. Correlational analyses indicated a small but significant association between the measures in the executive domain (stop task and Stroop task), but a lack of associations between the measures in the motivational domain (emotional Stroop task, a card playing task involving rewards and punishments, and a gambling task). Both measures of executive and motivational inhibition entered as significant predictors on the self-report measures related to inhibition in simultaneous regression analyses, but not consistently in the expected direction. The results suggest that inhibition is not a unitary construct, and demonstrate an association between experimental measures of inhibition and self-report measures related to inhibition.

Understanding the psychosocial profile of women with fibromyalgia syndrome.

Fibromyalgia syndrome (FMS) is a disease with a complex etiology characterized by symptoms of widespread pain and fatigue. FMS is more common in women. Both depression and anxiety have been found to be independently associated with the severity of pain in symptoms of FMS. The goal of the present study was to examine the psychosocial profile of women with FMS and to see how the attributions, perceived social support and cognitive biases of women with FMS are related to internalizing ratings of depression and anxiety. The current study included a sample of women with FMS from a local support group and a control group to examine how women with FMS differed from controls with respect to psychosocial variables, and to determine the relationship between these variables. Women with FMS reported a higher external locus of control, lower levels of adaptive cognitive bias, less perceived family support and lower mood than controls. Correlations between these variables were examined within the FMS group, and it was found that an external locus of control was significantly associated with higher ratings of anxiety and depressed mood. These results suggest that beliefs about locus of control and perceived family support of women with FMS may importantly impact their health outcomes, and that treatments related to locus of control and advocating for family support may considerably improve the quality of life of patients with FMS.

The need for intellectual diversity in psychological science: Our own studies of actively open-minded thinking as a case study.

Actively open-minded thinking (AOT) is measured by questionnaire items that tap the willingness to consider alternative opinions, the sensitivity to evidence contradictory to current beliefs, the willingness to postpone closure, and reflective thought. AOT has been found to be a strong predictor of performance on heuristics and biases tasks and of the avoidance of reasoning traps such as superstitious thinking and belief in conspiracy theories. Recently, several studies that have employed short forms of the AOT scale have shown startlingly high negative correlations with religiosity (in the range of -0.50 to -0.70). In a re-analysis of a large dataset, we demonstrate that it was a particular type of AOT item (termed a belief revision item, BR) that accounts for these large correlations. To our consternation, we realized that it was our research team that had introduced these items into the literature two decades ago, but we had heretofore never realized the potential for these items to skew correlations. In a new experiment, we demonstrate how BR items of this type disadvantage religious-minded subjects, and we show that it is possible to construct BR items with parallel content that are not so demographically biased. We also show that unbiased BR items do not sacrifice the predictive power that has previously been shown by AOT scales. We believe this lesson in item construction resulted from the lack of intellectual diversity in our own laboratory (specifically, the overwhelmingly secular composition of our lab personnel). We believe this case study shows the importance of intellectual diversity in psychology, especially when studying such topics as religiosity and political attitudes.