THE EFFECT OF SPACED VS. MASSED PRESENTATION OF AGGRESSION ITEMS ON VERBAL AGGRESSIVE RESPONSES OF CHILDREN

A story completion test was constructed and administered to 99 ten-year-old boys. The main results were: (1) The average number of aggressive responses tends to be lower when the aggression items are presented in a 'spaced' manner than when they are 'massed'. (2) There is a spread effect from aggression items to neutral items. Aggression and neutral items presented in mixed order give a stronger effect. (3) A relatively consistent factor structure of aggression responses was shown in the test. Aggression towards peers and authority were independent of each other, and seem to be influenced differently by the manner of presentation of stimuli.     

Innovations in Assessing ADHD: Development, Psychometric Properties, and Factor Structure of the ADHD Symptoms Rating Scale (ADHD-SRS)

This research involved the development of a behavior rating scale designed to measure ADHD and the investigation of the scale's psychometric properties and factor structure. This scale, the ADHD Symptoms Rating Scale (ADHD-SRS), was developed for the assessment of ADHD in the school-age (K–12) population. Participants were 1006 children and adolescents (in grades K–12) who were rated by their parents and/or teachers. The results indicate that the ADHD-SRS possesses strong internal consistency reliability and test–retest reliability and moderate cross-informant reliability. The data also suggest that the ADHD-SRS has strong content validity. Convergent validity of this instrument was also high, as demonstrated by correlations with three previously validated behavior rating scales. Significant age and gender differences in ADHD symptoms were found with both the parent and teacher respondent populations. Finally, the factor analysis of the ADHD-SRS suggested a two factor oblique rotation as the best fit for both the parent and the teacher data. After a visual inspection of the items which loaded on each factor, Factor 1 was named Hyperactive-Impulsive and Factor 2 was named Inattention. These two factors, along with the items which loaded on each factor, appear to be remarkably similar to the two categories listed in the DSM-IV for ADHD. Directions for future research, as well as clinical implications and limitations of the research are discussed.     

Categorization of natural movements by pigeons: visual concept discrimination and biological motion

In three experiments, pigeons were exposed to a discriminated autoshaping procedure in which categories of moving stimuli, presented on videotape, were differentially associated with reinforcement. All stimuli depicted pigeons making defined responses. In Experiment 1, one category consisted of several different scenes of pecking and the other consisted of scenes of walking, flying, head movements, or standing still. Four of the 4 birds for which pecking scenes were positive stimuli discriminated successfully, whereas only 1 of the 4 for which pecking was the negative category did so. In the pecking-positive group, there were differences between the pecking rates in the presence of the four negative actions, and these differences were consistent across subjects. In Experiment 2, only the categories of walking and pecking were used; some but not all birds learned this discrimination, whichever category was positive, and these birds showed some transfer to new stimuli in which the same movements were represented only by a small number of point lights (Johansson's “biological motion” displays). In Experiment 3, discriminations between pecking and walking movement categories using point-light displays were trained. Four of the 8 birds discriminated successfully, but transfer to fully detailed displays could not be demonstrated. Pseudoconcept control groups, in which scenes from the same categories of motion were used in both the positive and negative stimulus sets, were used in Experiments 1 and 3. None of the 8 pigeons trained under these conditions showed discriminative responding. The results suggest that pigeons can respond differentially to moving stimuli on the basis of movement cues alone.     

Perception of object unity in chicks: A comparison with the human infant

Newly hatched chicks (Gallus gallus) were imprinted on a display consisting of two rod pieces that moved above and below a central occluder. On test trials, the chicks approached a complete rod in preference to two rod pieces. This finding, supported by those from control coditions, suggests that chicks, soon after hatching, perceive object unity. The results are compared with those from human infants.     

Personality traits and parenting: neuroticism,extraversion, and openness to experience as discriminative factors

This study used variable‐ and person‐oriented approaches to examine the relationship between personality traits (at age 33) and parenting (at age 36) among 94 mothers and 78 fathers. The SEM revealed that Openness to Experience (O), low Neuroticism (N), and Extraversion (E) were related to parental nurturance; low O to parental restrictiveness; and low N to parental knowledge about the child's activities. Cluster analysis based on the three parenting factors yielded six gender‐related parenting types with distinguishable personality profiles. Authoritative parents (mostly mothers) and emotionally involved parents (mostly fathers), who were high in nurturance and high to moderate in parental knowledge, were high in E and high to moderate in O. Authoritarian parents (mostly fathers) and emotionally detached parents (mostly mothers), who were low in nurturance, high to moderate in restrictiveness, and moderate to low in parental knowledge, were low in O and E. Permissive parents, who were low in restrictiveness and parental knowledge and moderate in nurturance, were high in N, E, and O. Engaged parents, who were high in nurturance, restrictiveness, and parental knowledge, were moderate in all personality traits. Agreeableness and Conscientiousness did not differ between the parenting types. Copyright © 2002 John Wiley & Sons, Ltd.     

Protégé-mentor agreement about the provision of psychosocial support: The mentoring relationship, personality, and workload

Protégé-mentor agreement (PMA) about the provision of psychosocial support was examined in relation to job satisfaction, organizational commitment, and work self-esteem. One-hundred and sixty-six junior administrative and information technology (IT) staff at an Australian university and their matched mentors completed a questionnaire that assessed three antecedents to PMA: (1) structural and experience aspects of the mentorship (type and length of relationship, frequency of meetings, previous experience with mentoring, and gender-mix); (2) protégé and mentor personality (agreeableness, openness, extroversion, neuroticism, and conscientiousness); and (3) protégé and mentor workload. Structural Equation Modeling using Partial Least Squares revealed that PMA was predicted by structural and experience aspects of the mentorship (type of mentorship, frequency of meetings, and experience of the mentor), protégé personality (agreeableness, openness, extroversion, and conscientiousness), mentor personality (agreeableness, openness, and extroversion), and mentor workload. Protégé-mentor agreement was positively related to job satisfaction and organizational commitment for protégés and mentors.     

Predicting self‐esteem during unemployment: The effect of gender,financial deprivation,alternate roles,and social support

Two hundred and one unemployed men and women participated in a cross‐sectional study that assessed self‐esteem, financial deprivation, number of alternate roles, and use of social support. Financial deprivation, alternate roles, and social support each had a main effect on self‐esteem. In addition, these variables interacted with gender to affect self‐esteem. Specifically, financial deprivation had a greater negative association with self‐esteem in men as compared with women. In contrast, alternate roles and social support had a stronger positive relationship to self‐esteem in women than in men. The incorporation of these findings into intervention programs for unemployed persons is discussed.     

Reward Influence on the Heart: Cardiovascular Response as a Function of Incentive Value at Five Levels of Task Demand

This study examined cardiovascular effects of incentive value in men and women confronted with cognitive challenges that were more and less difficult to meet. Participants performed computer memory tasks varying in difficulty from low to high, with instructions that they could earn chances toward a $100 prize or $10 prize by attaining a 90% success rate. Analysis of cardiovascular responses assessed during work revealed an interaction between difficulty and incentive value for heart rate. Participants' heart rate responses were proportional to task difficulty and unaffected by incentive value in all conditions except for the most difficult one. Where difficulty was greatest, $100 participants showed relatively high heart rate responsiveness, whereas $10 participants showed low heart rate responsiveness. This heart rate finding corroborates and extends cardiovascular results from previous experiments, and lends further support to the view that cardiovascular responses will be proportional to incentive value only under some task conditions.     

Successful Development: Childhood Antecedents of Adaptive Psychosocial Functioning in Adulthood

The study was part of the Jyväskylä Longitudinal Study of Personality and Social Development. Data on developmental background for 131 women and 130 men consisted of variables for (1) emotion regulation at age 8, (2) cognitive–motivational orientation at age 14, and (3) family circumstances, and data on adult outcomes for variables concerning psychosocial functioning at age 36. Links between the childhood and adulthood variables were investigated using the LISREL model which consisted of two parts, the measurement model and the structural equation model. Two correlating latent factors emerged from adult outcomes for men and women: Social Functioning, consisting of external criteria for successful development (stability of career line, controlled drinking, socialization) and Psychological Functioning, consisting of internal criteria (self-esteem and psychological well-being). Only Social Functioning was explained by developmental background. High emotion regulation in childhood was a more robust antecedent of good social functioning in men than in women.