Confirming the Factor Structure of Attention Deficit Hyperactivity Disorder Symptoms in Adult, Nonclinical Samples

Three separate models have been proposed to describe the factor structure of attention deficit hyperactivity disorder (ADHD) in the past 20 years. The Diagnostic and Statistical Manual of Mental Disorders-III (DSM-III, 1980) proposed 3 separate factors of inattention, hyperactivity, and impulsivity. The DSM-III-R (1987) proposed a single factor. The DSM-IV (1994) described the disorder as having 2 factors: hyperactivity/impulsivity and inattention. The following 2 studies employed confirmatory factor analysis to compare each of these models and 3 alternative models. University students completed questionnaires that assessed each of the 18 symptoms listed in the DSM-IV for ADHD. The 3-factor model fit the data significantly better than each of the other models in both studies. These findings suggest that a 3-factor model of inattention, hyperactivity, and impulsivity describes adult ADHD symptoms better than current alternatives.     

Rehearsal and retrieval processes in free recall of categorized lists

The relationships between rehearsal and subsequent retrieval characteristics were examined in the context of free recall of categorized lists. The results indicated a direct correspondence between the frequency of rehearsal and the order and speed of retrieval within categories. The same relationship obtained for the categories themselves. It was suggested that both retrieval time and order effects can be predicted in terms of the organization of input processing and the resultant repetition frequency of categories and exemplars.     

Application of Problem Solving Therapy for Late-Life Anxiety

Cognitive behavioral therapy for anxiety has demonstrated lower efficacy in older compared with younger adults. Yet, few other evidence-based options for late-life anxiety have been examined. This case series aimed to demonstrate the application of Problem Solving Therapy (PST) to older adults with anxiety disorders building on PST’s strong empirical support for treating late-life depression. PST was implemented to treat three older primary-care patients diagnosed with anxiety disorders. We present treatment outcomes and discuss the feasibility and acceptability of using PST to treat these patients. Implications and lessons learned from these patients are discussed to inform further development of PST to better meet the needs of older patients suffering from late-life anxiety.     

Repeated Play Reduces Video Games’ Ability to Elicit Guilt: Evidence from a Longitudinal Experiment

Statements supported mostly by correlational and cross-sectional studies suggest that playing violent video games can cause emotional desensitization. A longitudinal experiment examined a) whether repeated violent game play leads to emotional desensitization and b) whether desensitization generalizes to other play and real-life experiences. Participants played alternative versions of the same violent game for the first four days; on these days, the character role was varied between-subjects to be moral (United Nations soldier) or immoral (terrorist soldier). On Day 5, all participants played a novel game as a terrorist. Results indicate two things. First, habituation occurs over repeated game play: Repeated exposure decreased the ability of the original game to elicit guilt. Second, the decreased ability to elicit guilt can generalize to other game-play experiences: Guilt elicited by the novel game on Day 5 was reduced for the immoral character condition compared to the moral character condition. The current study provides causal, longitudinal evidence regarding the potential for video game play to lead to emotional desensitization with regard to future video game-play experiences.     

Effects of Participation in a First Women's Studies Course on Collective Self‐Esteem,Gender‐Related Attitudes,and Emotional Well‐Being1

We studied the psychological sequelae of participation in a first women's studies course. It was hypothesized that this course would impact women's social identities (collective self‐esteem, CSE) and attitudes about gender (sexist and feminist beliefs). Further, we hypothesized that more liberal attitudes about gender would enhance mood, whereas awareness of devaluation (public CSE) would reduce mood. Female students enrolled in Psychology of Women (n= 55) and Introductory Psychology (n= 41) provided data at the beginning and end of an academic semester. As predicted, Psychology of Women students endorsed significantly more liberal attitudes about gender and awareness of devaluation over the course of the semester. Further, acceptance of feminist attitudes buffered against anxiety, whereas awareness of devaluation increased anxiety. The net effect was a nonsignificant change in anxiety for Psychology of Women students over time.     

When did atoms begin to do any explanatory work in chemistry?

During the 19th century atomism was a controversial issue in chemistry. It is an oversimplification to dismiss the critics' arguments as all falling under the general positivist view that what can't be seen can't be. The more interesting lines of argument either questioned whether any coherent notion of an atom had ever been formulated or questioned whether atoms were ever really given any explanatory role. At what point, and for what reasons, did atomistic hypotheses begin to explain anything in chemistry? It is argued that 19th‐century atomic accounts of constant proportions and isomerism had little to offer, whereas a non‐atomic explanation of chemical combination was developed. Not until the turn of the century did atomism begin to do serious explanatory work in chemistry.     

Continuants and Processes in Macroscopic Chemistry

Chemistry deals with substances and their transformations. School chemistry provides a picture of this in terms of small balls called atoms and ball-and-stick structures called molecules which, despite its crudity, has been taken to justifiably reflect a reductionist conception of macroscopic concepts like the chemical substances and chemical reactions. But with the recent interest in chemistry within the philosophy of science, an extensive and determined criticism has developed of the idea that the macroscopic world has been, or is likely to be, reduced to microscopic theory. From this perspective, it is of interest to see macroscopic ontology treated autonomously. I try to take a first few steps towards spelling this out. It involves recognising entities falling into two broad categories: continuants-things which can have different properties at different times — and processes — things whose temporal parts may have different features, but which themselves stand in contrast to continuants in this respect. The character of each and their interrelations depends on their mereological structure of parts, the exploration of which is one of the prime purposes of the paper.