Predictors of adolescent dieting behaviors: A longitudinal study.

Research suggests that dieting is a risk factor for bulimia nervosa, yet little is known about the predictors of dieting. Accordingly, this study examined the correlates and prospective predictors of dieting in a community sample of 320 adolescent females (aged 16–19 yrs). Results indicate that body mass, pressure to be thin, thin-ideal internalization, body dissatisfaction, and binge eating were positively correlated with dieting. Moreover, body mass, pressure to be thin, body dissatisfaction, and binge eating prospectively predicted increased dieting over a 9-mo period. Multivariate analyses revealed that this set of predictors accounted for significant variance in concurrent and subsequent dieting, although only some of the unique effects were significant in the full models. Not only do these findings identify several risk factors for dieting, but they also suggest that dieting may be a response to bulimic pathology. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A prospective study of youth gambling behaviors.

Little is known about the course and outcomes of adolescent gambling. This prospective study describes findings from a 3-wave (Time 1 [T1], Time 2 [T2], and Time 3 [T31]) assessment of gambling behaviors among youth (N = 305). Stable rates of any gambling and regular gambling (weekly or daily) were observed across T1, T2, and T3. The rate of at-risk gambling significantly increased at T3 (young adulthood), whereas the rate of problem gambling remained stable over time. Several adolescent risk factors were associated with either T3 at-risk or problem gambling, many of which are risk factors for adolescent substance abuse. Findings suggest that important to the origins of young adult gambling problems are risk factors associated with the problem behavior syndrome of adolescence. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Effects of dispositional dominance and sex role expectations on leadership behaviors.

In a conceptual replication and extension of E. I. Megargee's (1969) investigation of the influence of sex roles on the expression of trait dominance, 40 same- and 40 mixed-sex dyads of undergraduates were asked to choose a leader and then to interact while performing a gender-neutral task. Ss were selected on the basis of scores on the California Personality Inventory Dominance scale. In each dyad, a high-dominant S was paired with a low-dominant S. Percentages of high-dominant Ss assuming the leadership role were similar to those obtained by Megargee: 73% in same-sex pairs, 90% in mixed-sex dyads in which the male was high dominant, and only 35% in mixed-sex dyads in which the female was high dominant. While performing the task, high-dominant female followers of low-dominant male leaders were generally more dominant in their behaviors than were low-dominant female followers of male leaders. They were also less satisfied than were the latter with their partner and with their position as follower. (9 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A systems model of leadership: WICS.

This article reviews a systems model of leadership. According to the model, effective leadership is a synthesis of wisdom, creativity, and intelligence (WICS). It is in large part a decision about how to marshal and deploy these resources. One needs creativity to generate ideas, academic (analytical) intelligence to evaluate whether the ideas are good, practical intelligence to implement the ideas and persuade others of their worth, and wisdom to balance the interests of all stakeholders and to ensure that the actions of the leader seek a common good. The article relates the current model to other extant models of leadership. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A multilevel study of leadership, empowerment, and performance in teams.

A multilevel model of leadership, empowerment, and performance was tested using a sample of 62 teams, 445 individual members, 62 team leaders, and 31 external managers from 31 stores of a Fortune 500 company. Leader-member exchange and leadership climate related differently to individual and team empowerment and interacted to influence individual empowerment. Also, several relationships were supported in more but not in less interdependent teams. Specifically, leader-member exchange related to individual performance partially through individual empowerment; leadership climate related to team performance partially through team empowerment; team empowerment moderated the relationship between individual empowerment and performance; and individual performance was positively related to team performance. Contributions to team leadership theory, research, and practices are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Family life-styles and child behaviors: A study of direction of effects.

Examined the direction of effects between slow-learning children and their families in 3 family types: learning-oriented (LO), high residential quality; achievement-oriented (AO), low residential quality; and outer-directed (OD), with little achievement orientation. Child variables examined were measures of adjustment and adaptive behavior. Family variables (assessed on measures including the Family Environment Scale) included levels of community and recreational participation, expressiveness, achievement orientation, provision of learning materials, harmony, quality of the residential environment, and openness with the interviewer. There were 56 LO children (mean age 12.6 yrs [mean IQ 69.6]), 37 AO children (mean age 12.2 yrs [mean IQ 68.5]), and 32 OD children (mean age 12.7 yrs [mean IQ 69.5]). Cross-lagged panel analysis revealed different directions of effect in the 3 family types. In LO families, the child influenced the family for all variables except for expressiveness; in AO families, parents influenced the child; and in OD families, there were bidirectional effects whereby the child's self-help skills influenced parents, but parents influenced the child in higher-level skills such as social adjustment, motivation, and competency in community living. (37 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Gender and leadership style: A meta-analysis.

Research comparing the leadership styles of women and men is reviewed, and evidence is found for both the presence and absence of differences between the sexes. In contrast to the gender-stereotypic expectation that women lead in an interpersonally oriented style and men in a task-oriented style, female and male leaders did not differ in these two styles in organizational studies. However, these aspects of leadership style were somewhat gender stereotypic in the two other classes of leadership studies investigated, namely (a) laboratory experiments and (b) assessment studies, which were defined as research that assessed the leadership styles of people not selected for occupancy of leadership roles. Consistent with stereotypic expectations about a different aspect of leadership style, the tendency to lead democratically or autocratically, women tended to adopt a more democratic or participative style and a less autocratic or directive style than did men. This sex difference appeared in all three classes of leadership studies, including those conducted in organizations. These and other findings are interpreted in terms of a social role theory of sex differences in social behavior. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Teacher classroom behaviors involved in microteaching and student achievement: A regression study.

Compared student teachers given microteaching or traditional observation treatments to teachers in a no-preparation control group. A random sample of 192 male high school students, blocked into 4 mathematics ability levels in each school in either an urban, suburban, or rural setting, was randomly assigned to a random sample of 36 trainee teachers. They were then blocked into 2 mathematics ability levels and randomly assigned to the 2 treatment groups and the control group. Student teachers who were trained through microteaching demonstrated a significantly higher frequency count of the behavior referents of the microteaching skills. A linear regression data analysis indicated a significant joint contribution effect to variation in student mathematics achievement. (12 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Transformational leadership, initiating structure, and substitutes for leadership: A longitudinal study of research and development project team performance.

Transformational leadership, initiating structure, and selected substitutes for leadership were studied as longitudinal predictors of performance in 118 research and development (R&D) project teams from 5 firms. As hypothesized, transformational leadership predicted 1-year-later technical quality, schedule performance, and cost performance and 5-year-later profitability and speed to market. Initiating structure predicted all the performance measures. The substitutes of subordinate ability and an intrinsically satisfying task each predicted technical quality and profitability, and ability predicted speed to market. Moderator effects for type of R&D work were hypothesized and found whereby transformational leadership was a stronger predictor of technical quality in research projects, whereas initiating structure was a stronger predictor of technical quality in development projects. Implications for leadership theory and research are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Conscientiousness, perceived risk, and risk-reduction behaviors: A preliminary study.

Participants (N?=?343) from an Oregon community completed surveys at baseline, 3 months, and 12 months to assess personality, the perceived health risk of radon in combination with smoking, and changes in smoking behavior. Conscientiousness predicted instituting a more restrictive household smoking rule (p?p?p?     

Social identity, self-categorization, and leadership: A field study of small interactive groups.

This article describes a social identity and self-categorization analysis of leadership. As people identify more strongly with a group, they increasingly confer leadership on fellow members who are group prototypical. They grant them power and influence through consensual social attraction and attributional processes. Leadership schemas, group membership variables, and leadership effectiveness perceptions were measured 1 week apart in Outward Bound groups. As predicted, (a) group identification, perceived leadership effectiveness, and social attraction increased over time, (b) leadership effectiveness was a positive function of social attraction and group prototypicality of the leader and was amplified among high-identifying participants, and (c) perceived leader schema typicality of the leader was a predictor of perceived leadership effectiveness, but was uninfluenced by identification. Unpredicted attribution effects are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The moderating role of safety-specific trust on the relation between safety-specific leadership and safety citizenship behaviors.

The authors examined whether safety-specific trust moderates or mediates the relationship between safety-specific transformational leadership and subordinates' safety citizenship behavior. Data from 139 subordinate-supervisor dyads were collected from the United Kingdom construction industry and analyzed using hierarchical regression models. Results showed that safety-specific trust moderated rather than mediated the effects of safety-specific transformational leaders on subordinates' behavior. Specifically, in conditions of high and moderate safety-specific trust, leaders had a significant effect on subordinates' safety citizenship behavior. However, in conditions of low safety-specific trust, leaders did not significantly influence subordinates' safety citizenship behavior. The implications of these findings for general safety theory and practice are discussed. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A longitudinal study of stress buffering for adolescent problem behaviors.

A 2-wave longitudinal design, with a 6-mo interval between occasions of measurement, was used to study the interrelations between stressful life events, perceived social support from family and friends, and the internalizing (e.g., depressive symptoms) and externalizing (e.g., alcohol use and delinquent activity) of problems of a sample of 277 middle adolescents (mean age?=?15.7 yrs). Although little support was found for the stress-buffering effects of either family or friend social support, the main effects of stressful life events and low family support were significant prospective predictors of problem behaviors for adolescent girls but not adolescent boys. Results are discussed with regard to mechanisms of differential gender socialization, such as the adolescent gender intensification hypothesis (J. P. Hill and M. W. Lynch, 1983). (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Moving up the corporate ladder: A longitudinal study of the leadership motive pattern and managerial success in women and men.

Using TAT data collected prior to entering management positions, sex differences in motive patterns related to leadership were examined in a 12-yr longitudinal study of 211 men and 180 women (aged 21–43 yrs at initial assessment) who entered a large utility corporation between 1977 and 1982. Ss were followed up in 1990 and recorded as to how far they had advanced in management level. While the results showed no sex differences in motivational predictors of attained management level, the content analysis revealed 2 distinct styles of power-related themes that distinguished the successful men from the successful women. The successful male managers were more likely to use reactive power themes while the successful female managers were more likely to use resourceful power themes. Differences between the sexes in the power themes were less pronounced among the managers who had remained in lower levels of management. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Female medical leadership: cross sectional study

OBJECTIVE: To assess the relation between male and female medical leadership. DESIGN: Cross sectional study on predictive factors for female medical leadership with data on sex, age, specialty, and occupational status of Norwegian physicians. SETTING: Oslo, Norway. SUBJECTS: 13 844 non-retired Norwegian physicians. MAIN OUTCOME MEASURE: Medical leaders, defined as physicians holding a leading position in hospital medicine, public health, academic medicine, or private health care. RESULTS: 14.6% (95% confidence interval 14.0% to 15.4%) of the men were leaders compared with 5.1% (4.4% to 5.9%) of the women. Adjusted for age men had a higher estimated probability of leadership in all categories of age and job, the highest being in academic medicine with 0.57 (0.42 to 0.72) for men aged over 54 years compared with 0.39 (0.21 to 0.63) for women in the same category. Among female hospital physicians there was a positive relation between the proportion of women in their specialty and the probability of leadership. CONCLUSION: Women do not reach senior positions as easily as men. Medical specialties with high proportions of women have more female leaders.     

Strangers, travelers, and Greyhound terminals: A study of small-scale helping behaviors.

Four questions designed to elicit helping behaviors were posed to 646 adult strangers in 120 bus terminals throughout the US. American and Australian experimenters (Es) tested whether familiar strangers (fellow bus travelers) would help more than total strangers and whether helping effects were influenced by nationality. Results indicate that Australian and American females, but not male American Es, were helped more by familiar strangers. Chi-square analyses also demonstrated an interaction effect between E's sex, nationality, and familiar–total stranger helping. The findings for Australian Es are considered to be consequences of a particular social role, labeled "foreign tourist," which legitimizes help-seeking behavior. (18 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A facet analysis of leadership styles.

Employed facet analysis with 327 male and 80 female subordinates in industry, business, and academia. Leadership styles were defined as a function of 3 facets--the leader's behavior, the locus of power, and the locus of information within a management-subordinate system. Five leadership styles were defined by these facets--direction, negotiation, consultation, participation, and delegation. The common order that exists within each facet determined a partially ordered set of leader styles. The intercorrelation matrix of leader styles, based on survey data, was subjected to the Guttman-Lingoes smallest space analysis, which transforms correlation coefficients to distance in an Euclidean space. The hypothesized partial order relations among the different leader styles were accurately reflected in the analysis. This lends support to the potential of facet analysis in studying leadership styles. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A study of genetic and environmental effects on the co-occurrence of problem behaviors in three-year-old-twins.

The authors examined the genetic and environmental causes of the co-occurrence of problem behaviors in children. The analyses involved mother and father ratings of Oppositional, Withdrawn/Depressed, Aggressive, Anxious, Overactive, and Sleep Problems in 446 monozygotic and 912 dizygotic pairs of 3-year-old twins. Genetic factors contributed on average .150 (37.3%), shared environment .206 (51.2%), and nonshared environment .046 (11.4%) to the phenotypic correlations between the syndromes. Genetic and environmental factors caused different groupings. Internalizing and Externalizing groupings were indicative of nonshared environmental factors; clusters of problem behaviors with either the Aggressive or Anxious symptoms were most suggestive of genetic factors, and high scores on all syndromes indicated shared environmental influences. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Personality and leadership: A qualitative and quantitative review.

This article provides a qualitative review of the trait perspective in leadership research, followed by a meta-analysis. The authors used the 5-factor model as an organizing framework and meta-analyzed 222 correlations from 73 samples. Overall, the correlations with leadership were Neuroticism=-.24, Extraversion=.31, Openness to Experience=.24, Agreeableness=.08, and Conscientiousness=.28. Results indicated that the relations of Neuroticism, Extraversion, Openness to Experience, and Conscientiousness with leadership generalized in that more than 90% of the individual correlations were greater than 0. Extraversion was the most consistent correlate of leadership across study settings and leadership criteria (leader emergence and leadership effectiveness). Overall, the 5-factor model had a multiple correlation of .48 with leadership, indicating strong support for the leader trait perspective when traits are organized according to the 5-factor model. (PsycINFO Database Record (c) 2010 APA, all rights reserved)