A threshold for the protective effect of over-reinforced passive avoidance against scopolamine-induced amnesia.

Acetylcholine-receptor blockers produce amnesia of aversively motivated behaviors. However, when animals are submitted to relatively high intensities of footshock (over-reinforcement), anticholinergic treatment does not induce memory impairments. The aim of this work was to determine whether the antiamnesic effect produced by increasing the magnitude of the negative reinforcer is gradually established or if a threshold should be reached to obtain such an effect. Wistar rats were trained in passive avoidance using 2.5, 2.6, 2.7, 2.8, 2.9 or 3.0 mA; 5 min after training they were given one systemic injection of scopolamine (8 mg/kg). An amnesic state was produced in the groups that were trained with the lower intensities (2.5-2.7 mA); with the three higher intensities near-perfect retention was evident. These results suggest that acetylcholine is critically involved in memory consolidation, and that by increasing the magnitude of the negative reinforcer, a threshold is reached where cholinergic activity of the nervous system is not necessary for the development of the consolidation process.     

Four-year results of a youth smoking prevention program using assertiveness training

Assertiveness training and its relationship to smoking behavior and how young adolescent boys and girls differ with respect to assertion was investigated. A total of 161 seventh-grade students from six health education classes participated. Two classes received an innovative smoking education program, two classes received assertiveness training plus an innovative smoking education program, and two classes received only the smoking education program usually offered by the school. Locus of control and levels of assertion and smoking behavior were assessed at pre- and posttest. The results indicate that boys are significantly more assertive than girls at age 12 (p = .0018), and this assertiveness increases equally over the next four years (p less than .0001). There were no significant differences in smoking behavior among the three groups; however, trends in smoking behavior in the desired direction were observed. There is no significant difference in smoking behavior between boys and girls. In this respect the sexes have reached equality, that is, girls are initiating cigarette smoking as frequently as are boys. Finally, there were no significant changes in assertion among the groups. It is concluded that the utility of assertiveness training for young adolescents is questionable.     

Further examination of the reliability of the Modified Rathus Assertiveness Schedule

The reliability of the 30-item Modified Rathus Assertiveness Schedule (MRAS) was examined using the test-retest method over a three-week period. The MRAS, which was administered to 103 white middle-class seventh graders, yielded correlations of .74 using the Pearson product and Spearman Brown correlation coefficient. The correlations for males yielded .77 and .72 using the Pearson Product and Spearman Brown techniques, respectively. For females the correlations for both tests were .72. Paired t tests by sex indicated no significant change in MRAS scores between test administrations. These findings add to the existing information on the reliability of the MRAS.     

Nonverbal learning disabilities: The syndrome and a case study

Presents the syndrome of nonverbal learning disabilities (NLD) and the model developed to encompass its complex manifestations. Included are the history of the development of the syndrome, the types of children in whom its principal features are manifest, the hypothesized neurological bases of the syndrome, and a test of its developmental dimensions. A case study with assessment results and treatment implications illustrates the clinical dimensions of the syndrome. General developmental and treatment implications of the NLD syndrome and the NLD model are also included.     

Impact of Depression and Anxiety on the Quality of Life of Constipated Patients

Constipation negatively affects quality of life (QOL), however, the specific mechanisms through which this relationship occurs are unclear. The present study examined anxiety and depression as potential mediators of the relationship between constipation severity and QOL in a sample of 142 constipated patients. Results indicated that depression symptom severity mediated the relationship between constipation severity and mental health-related QOL. For patients meeting diagnostic criteria for Major Depressive Disorder, indirect effects were observed in the relationship between constipation severity and both physical and mental health-related QOL. Anxiety did not contribute to this model. Treating depression may be useful in improving QOL in severely constipated patients, which highlights the importance of psychological screening and treatment referrals in primary care settings.     

A Tower Unto Heaven: Toward an Expanded Framework for Psychopathology

I respond to commentaries on my target article “An Evolutionary Life History Framework for Psychopathology.” I start by addressing criticism of my basic assumptions about life history strategies and their implications for individual differences in human behavior. Next, I examine the theoretical structure of the proposed framework and respond to the commentators’ challenges to its generality and flexibility. I show how the framework can be expanded to include multiple levels of analysis and to integrate behavioral control with neurological functionality; I also reinterpret the recent finding of a general factor of psychopathology in the context of the expanded framework. In the last section I discuss specific psychopathological conditions, namely attention deficit/hyperactivity disorder, borderline personality disorder, substance abuse, autism spectrum disorders, schizophrenia spectrum disorders, obsessive-compulsive disorder, eating disorders, and depression. For each condition, I reply to the commentators’ criticism of my life history analysis, integrate their suggestions and insights, highlight the present weaknesses of the theory, and indicate promising directions for future research.     

The Role of Parents in Emerging Adults’ Psychological Well‐Being: A Person‐Oriented Approach

The purpose of this study was to gain an overview of Spanish emerging adults’ family relationships and their link with psychological well‐being and psychological distress. The sample comprised 1502 undergraduate students (903 women and 599 men) aged between 18 and 29 (M = 20.32 and SD = 2.13), recruited from two universities in Spain. A cluster analysis identified three groups of families based on the centrality of five family variables: parental involvement, parental support for autonomy, parental warmth, behavioral control, and psychological control. The three groups or clusters were labeled high‐quality family relationships (HQ), intermediate‐quality family relationships (IQ), and low‐quality family relationships (LQ). Women were overrepresented in the HQ cluster, whereas men were overrepresented in the IQ cluster. Moreover, emerging adults who perceived better family relationships (high levels of parental involvement, parental support for autonomy and parental warmth, and low levels of behavioral and psychological control) were found to have a higher level of psychological adjustment. Thus, our results indicate that family plays a key role in the psychological well‐being of emerging adults. The discussion focuses on the implications of this finding for the parent‐child relationship, and explores how it extends our knowledge about family relationships during emerging adulthood.