ADHD as a Potential Risk Factor in Poor Antiretroviral Adherence Rates in HIV: A Brief Narrative Review and Suggestions for Future Research

Neuropsychology Review - This was a narrative review of the literature pertaining to antiretroviral adherence rates in patients with HIV, with a focus on ADHD as a potential risk for poor...     

Varying reinforcement magnitude on interval schedules

In Experiment 1, rats were trained on either a random-interval or a variable-interval 60-sec schedule of reinforcement, and reinforcement magnitude was varied across conditions between one and four pellets. Although the two schedules maintained different patterns of behaviour, patterns and rates of responding were not systematically affected by the variation in reinforcement magnitude. In Experiment 2, a regulated probability interval schedule that generated similar rates of reinforcement to those of the schedules of Experiment 1 was used, with the pattern of behaviour generated resembling that typical of a random-interval schedule. Changing reinforcement magnitude again produced few systematic changes in behaviour. In Experiment 3, a variable-ratio schedule was used within a procedure that otherwise resembled that of Experiments 1 and 2. Increasing the reinforcement magnitude now decreased the rates of responding, and examination of the patterns of responding showed that this came about because rates of responding were higher early in the interreinforcer interval in the one-pellet condition. These experiments demonstrate the insensitivity of behaviour under interval schedules to changes in reinforcement magnitude and suggest the operation of mechanisms different from those engaged by ratio schedules and discretetrial learning procedures.     

A grouping interpretation of the modality effect in immediate probed recognition

In a series of experiments on immediate probed recognition for eight 3-digit numbers, it was shown that if the target modality involved auditory components and the effect of the similarity of the modality of the probe to that of the targets was controlled, unequivocal evidence was obtained for an auditory superiority effect (modality effect) for hit rates for the final items of the list. Moreover, false-alarm rates were significantly lower following targets with an auditory component than they were following silently seen targets. It is argued that this pattern of hits and false alarms is consistent with the idea that targets that have an auditory component yield memory representations that are better grouped as units than are those for targets that are only silently seen; in particular, if a new probe has a first digit that accidentally matches the first digit of a target item, it is more likely that the subject will mistakenly identify this new probe as old (give a false alarm) if the target has only been partially encoded because it was only silently seen.     

Personality and Attraction to the Charismatic Movement: a study among Anglican clergy

A sample of 172 male clergy within the Church of England completed the Eysenck Personality Questionnaire together with an index of charismatic experience. The data demonstrate that charismatic experience is positively associated with extroversion, but related to neither neuroticism nor psychoticism.     

Factor Structure of the Difficulties in Emotion Regulation Scale (DERS) in Adult Outpatients Receiving Dialectical Behavior Therapy (DBT)

The Difficulties in Emotion Regulation Scale (DERS; Gratz & Roemer in Journal of Psychopathology and Behavioral Assessment, 26, 41–54, 2004) is a widely used measure of emotion regulation, however, few studies have examined the scale’s psychometric properties in clinical samples. The current study examined the latent factor structure of the scale, in addition to other psychometric properties, in a naturalistic sample of adult outpatients (n = 344) receiving dialectical behavior therapy (DBT). A number of models were fitted, including a bifactor model, which has not previously been examined with the DERS, but which may be more appropriate for addressing the study’s two primary aims. These aims were to: (1) investigate some of the prior concerns raised about the Awareness subscale items; and (2) evaluate the appropriateness of using DERS total vs. subscale scores. Results indicated that a modified bifactor model which excluded the Awareness items from the general factor fit the data best. Additional findings suggested that the DERS total score (excluding Awareness items) was reliable and had good criterion-related validity in this sample. However, the findings related to the DERS subscales were mixed. This study extends prior research on the DERS by demonstrating the utility of the scale with individuals receiving DBT for problems with emotion regulation, as well as by clarifying some of the prior questions about the scale’s latent structure.