The relationship between personality and affect over the lifespan

This study compared the trait and emotion perspectives of personality development by examining relationships between extraversion, neuroticism, positive and negative affect across the lifespan. A total of 533 volunteers: 228 children and early adolescents (8 to 15 years), 163 late adolescents and young adults (16 to 29 years) and 142 adults (30 to 68 years) completed Eysenck's Personality Questionnaire (EPQ) and the Positive and Negative Affect Schedule (PANAS). Extraversion correlated significantly with positive affect and neuroticism with negative affect in each age group. As predicted by the emotion perspective, correlations were significantly stronger for adults than children and early adolescents. In addition, extraversion-positive affect and neuroticism-negative affect factors explained less variance for children and early adolescents compared to those of adults.     

Threat processing in obsessive-compulsive disorder: evidence from a modified negative priming task

Individuals with obsessive-compulsive disorder (OCD) often experience intrusive thoughts. These intrusions may be due to biases in information processing mechanisms, including attention, memory, and learning. To examine this hypothesis, we presented a modified negative priming (NP) paradigm with idiographically selected words to 19 individuals with OCD (OCs) and 19 matched non-anxious control participants (NACs). The words included OCD-relevant threat, OCD-relevant positive, and neutral words. This paradigm typically elicits positive priming because participants may learn the contingency between the prime and probe that facilitates responding [Frings and Wentura (2006). Strategy effects counteract distractor inhibition: NP with constantly absent probe distractors. Journal of Experimental Psychology: Human Perception and Performance, 32, 854-864]. As predicted, NACs showed facilitation (i.e., positive priming) rather than NP for all word types, whereas OCs exhibited facilitation for only neutral words. For positive words, OCs exhibited no priming and for threat words they exhibited NP. These results suggest that for idiographic, OCD-relevant threat information, individuals with OCD show difficulty learning the contingency between the information in the prime and probe displays relative to the NACs.     

Leftists’ and rightists’ IQ as a function of stereotype salience

This study examined the intellectual performance of leftists (or liberals) and rightists (or conservatives) when a stereotype about members of a disadvantaged outgroup (immigrants) is salient. Building on system-justification theory (SJT) and the motivated social cognition approach of political conservatism, it was predicted that when the stereotype about immigrant students’ underachievement is salient in academic settings, leftist students would perform worse, whereas rightist students would perform better than in a control condition. In two samples, Swiss native students were first reminded (or not) of the stereotype and then performed a difficult intellectual test. The results yielded support for the predictions. These findings illustrate how different ideological motives (system-challenging vs. system-justifying) might influence performance among leftist and rightist students.     

The associations between Self-Criticism and Dependency and incidental learning of interpersonal and achievement words

Personality trait-congruent implicit content processing was studied experimentally. In Experiment-1 (N = 132), individual differences in Self-Criticism were most strongly associated with incidental learning of negative achievement words, whereas individual differences in Dependency were most strongly associated with incidental learning of negative interpersonal words. In Experiment-2 (N = 172), individual differences interacted with processing tendencies in predicting negative affect. Highly dependent and highly self-critical individuals experienced higher negative affect if they were low in incidental learning of positive interpersonal words. Overall, these findings indicate that Self-Criticism and Dependency have significantly differential impacts on implicit cognitive processes.     

Selective attention and inhibitory deficits in ADHD: Does subtype or comorbidity modulate negative priming effects?

Selective attention has durable consequences for behavior and neural activation. Negative priming (NP) effects are assumed to reflect a critical inhibitory component of selective attention. The performance of adolescents with Attention Deficit/Hyperactivity Disorder (ADHD) was assessed across two conceptually based NP tasks within a selective attention procedure. Comorbidity (non-comorbid ADHD vs. comorbid ADHD) and subtype (ADHD combined vs. ADHD inattentive) were considered key issues. Results found NP effects to differ as a function of comorbidity but not subtype. Findings are discussed in light of functional neuroimaging evidence for neuronal enhancement for unattended stimuli relative to attended stimuli that strongly complements an inhibitory-based explanation for NP. Implications for the ‘AD’ in ADHD and contemporary process models of the disorder are considered.     

The Structure of Anxiety and Depression in a Normative Sample of Younger and Older Australian Adolescents

It has been reported that depression and anxiety have overlapping symptoms and are conceptually interrelated. One of the most prominent theoretical developments that explain this association is Clark and Watson’s tripartite model (Journal of Abnormal Psychology, 100:316–336, 1991) that posits these two disorders and negative emotions share a latent component of negative affect (NA). The current study had two aims, (a) to compare a tripartite factor structure against competing models by Confirmatory Factor Analysis (CFA) of the Depression Anxiety and Stress Scales (DASS-21) (Lovibond and Lovibond 1995), and (b) explore the psychometric properties of the DASS-21. The DASS-21 was completed by a representative sample of 4039 young Australians, aged 12–18 years, as part of the South Australian Youth Mental Health Survey (SAYMHS), South Australia, Australia. The best fitting model for the data consisted of anhedonic depression, physiological hyperarousal, and general NA. The psychometric properties of the DASS-21 were excellent with a stable and interpretable factor structure and good internal consistency. The results of the current study suggest that the theoretical tripartite structure of depression and anxiety is robust and applicable among Australian youth. The diagnostic, clinical and theoretical implications of these findings are discussed.     

Associations of Lifetime Depression with Trauma Exposure,Other Environmental Adversities,and Impairment in Adolescents with ADHD

Depression is a common, potentially devastating comorbidity in youth with attention-deficit/hyperactivity disorders (ADHD). Various environmental adversities are well-described as correlates of depression in general pediatric populations, but not in youth with ADHD. In 104 adolescents with ADHD, we examined potential environmental correlates of lifetime depression, including trauma exposure, recent negative life events and current parent-child conflict, along with current and past ADHD severity and current impairment. Controlling for demographic variables, comorbid disorders, and ADHD severity, we noted significant associations between lifetime depression and environmental adversities, including victimization trauma, parent-child conflict, and behaviorally-independent negative life events. Current impairment but not ADHD severity was also highly associated with lifetime depression, controlling for the same covariates. Findings from this preliminary, cross-sectional study suggest that environmental adversities and impairment in youth with ADHD should also be targeted along with the ADHD when contemplating strategies to treat or prevent comorbid depression.     

A critical evaluation of cognitive inhibition in dissociative identity disorder as inferred by negative priming in the flanker task: Limitations and the episodic retrieval alternative

Studies examining negative priming in dissociative identity disorder (DID) using the flanker task have reported emotional context effects. Significant negative priming is evident when individuals with DID are assessed in a context deemed emotionally neutral, while in contexts designed to elevate anxiety, DID samples display reduced negative priming. Limitations and considerations are discussed around statistical power, generalizability and reliability, and the use of diagnostic groups over specific clinical symptoms. The negative priming findings in this growing body of work have been interpreted with reference to the functioning of cognitive inhibitory mechanisms. Explored is how the episodic retrieval account of negative priming, with its reliance on memory mechanisms, could account for the DID findings. Encoding and retrieval possibilities are discussed and it is concluded that a failure to encode the prime trial distractor stimulus, in contexts of heightened anxiety, could explain the experimental findings from an episodic retrieval perspective.     

A mediational model of trait negative affectivity, dispositional thought suppression, and intrusive thoughts following laboratory stressors

Two studies examined the relationships among trait negative affectivity, dispositional thought suppression, and intrusions in non-clinical samples. In Study 1 (N=87), participants were presented with a series of emotionally evocative images and intrusions were examined 48 h after presentation via self-report. In Study 2 (N=118), intrusions were examined using a behavioral Key-press and self-report at two time points (5 and 20 min) following exposure to a series of emotionally evocative images. In each study, participants were assessed for trait negative affectivity and the tendency to engage in thought suppression in response to unpleasant cognitions. Results from both studies support a model in which chronic thought suppression fully mediates the relationship between negative affectivity and the frequency of intrusions.     

Schizophrenia: Disease,Syndrome, or Dimensions?

Schizophrenia has the status of a clinical syndrome and may comprise a number of specific disease entities. This construct is similar to dementia, in which several diseases have been defined within the syndrome. Alternatively, schizophrenia may be a single disease entity with quite variable manifestations across cases. Kraepelin proposed dementia praecox as a disease entity, and Bleuler proposed dissociative pathology as fundamental to each case, thus substantiating the single disease entity concept. More recently, the nuclear schizophrenia construct defined the disease entity using specific criteria proposed by Schneider and Langfeldt. This view has been challenged by a series of studies during the past three decades. These investigations are summarized in this report. Implications for clinical work with families are considered.