Lightness,brightness, and brightness contrast: 1. Illuminance variation

Changes of annulus luminance in traditional disk-and-annulus patterns are perceptually ambiguous; they could be either reflectance or illuminance changes. In more complicated patterns, apparent reflectances are less ambiguous, letting us place test and standard patchesjnpxsurrounds perceived to be different grays. Our subjects matched the apparent amounts of light coming from the patches (brightnesses), their apparent reflectances (lightnesses), or the brightness differences between the patches and their surrounds (brightness contrasts). The three criteria produced quantitatively different results. Brightness contrasts matched when the patch/surround luminance ratio of the test was approximately equal to that of the standard. Lightness matches were illumination invariant but were not exact reflectance matches; the different surrounda of test and standard produced a small illumination-invariant error. This constant error was negligible for increments, but, for decrements, it was approximately 1.5 Munsell value steps. Brightness matches covaried substantially with illuminance.     

The role of perceptions of political tactics in predicting turnover from behavioral intentions

The role of behavioral intentions in predicting turnover has received considerable attention in recent years. The purpose of the present study was to examine the potential moderating impact of a person's perceptions of political tactics (PPT) on the relationship between turnover intentions and voluntary turnover. The research sample consisted of 404 white-collar employees working for a textile manufacturing firm. Logistic regression indicated support for the hypothesized moderator effect. Results suggested that turnover intentions were less predictive of turnover for individuals who perceived political tactics to be useful in attaining organizational success as compared to those who perceived them not to be useful. Future research suggestions are provided.     

Recall and recognition of self-performed acts

Summary In Experiment 1, recall and recognition of 80 action phrases were compared under two encoding conditions: verbal and motor (performing the denoted acts). Memory performance was better under motor encoding than under verbal encoding, and more so in recognition than in recall. We assume that this finding is due to the item-specific effect of a specific motor component in the memory trace after enacting. In Experiments 2 and 3 we further investigated whether false-alarm rates are dependent on the motoric similarity of distractor items. The rate of false alarms was lower under motor encoding than under verbal encoding, but the motoric similarity of distractor items to list items did not influence the false alarms. The results were interpreted as support for the assumption that motor encoding enhances item-specific information in relation to verbal encoding, but that during verbal recognition the motoric quality of the depicted movement is not processed.     

Measurement of adolescents' life events: The junior high life experiences survey

The first of these two studies examined the relationship between adolescents' scores on a social desirability questionnaire and scores of negative, positive, and total life events. Only number of positive events was significantly related to social desirability. The second study compared various scoring strategies with respect to their intercorrelation and their ability to predict adolescents' maladjustment (depression, anxiety, and number of missed school days). The results demonstrated that (a) total number of events and readjustment-weighted life change scores were equally predictive of the maladjustment criteria; (b) negative events, but not positive events, however scored, were significantly related to the maladjustment criteria; (c) indices based on psychologist-judges' ratings of event desirability were not more predictive of the maladjustment criteria than were indices based on the adolescents' self-reports; and (d) uncontrollable negative events and controllable negative events were equally predictive of the maladjustment criteria.     

Temperament,classmate likability,and social perspective coordination as correlates of children's parent-rated type A behaviors

Parents of 58 boys and 62 girls from grades three through eight completed the Matthews Youth Test for Health (MYTH), a measure of Type A behavior. Normative and reliability data were similar to those obtained from teachers as reported in the literature, but a factor analysis of parents' ratings revealed four factors (Competitiveness, Irritability, Impatience, and Leadership) as opposed to the two factors (Impatience/Aggression and Competitiveness) that have been derived from teacher ratings. Boys had higher total MYTH scores than girls, but correlations with age were not significant. No grade or gender effects were obtained for any of the four MYTH factor scores. Correlates of the MYTH scores were computed separately for boys and for girls. For boys, Irritability was related to Reactivity, a Difficult Temperament, low classmate Likeability, and poor performance on two social cognitive tasks (compromising and friendship understanding). For girls, Leadership was related to Classmate Likeability and good performance on the two social cognitive tasks. For boys only, total MYTH scores were related to low Attention Span, high Reactivity, a Difficult Temperament, and low Friendship Understanding scores. Findings are related to the gender differences found in the study of both ego control and cooperation/ competition.