Influence of sex differences in leaders' behavior

Sex differences in influence tactics were examined with a sample of 269 followers (67 men, 202 women) at a large midwestern national insurance company who rated the downward influence tactics used by their direct supervisors. Downward influence tactics are behaviors used by leaders to gain compliance from followers. One department within the organization was identified as a source for participants in the study. Participation was voluntary. The age range for the sample was 21 to 65 years, with the largest percentage falling in the 40-49 year range (M = 3.8, SD = .8). Hierarchical linear modeling procedures were utilized to analyze the multiple level data (leader and follower) and to examine variables within the organization at different levels of analysis. Leader participants were asked to solicit their followers to complete an influence tactic measure, which consisted of the most reliable subscales taken from the Influence Behavior Questionnaire, Schriesheim and Hinkin Influence Measure, and the Profiles of Organizational Influence Strategies. The integrated measure resulted in a 45-item scale. It was hypothesized that, overall, followers would report that male leaders would use hard influence tactics more frequently than female leaders. On the other hand, followers would report that female leaders would use soft influence tactics more frequently than male leaders. When differentiating followers by sex, however, we expected that male followers would report more than female followers that their leaders use hard tactics more frequently. Also, we expected that female followers would report (more than male followers) that their leaders use soft tactics more frequently. Overall, followers reported that male leaders used significantly more personal appeal and consultation, so called "soft tactics," with their followers than did female leaders. Female followers reported that their leaders (both male and female) used consultation and inspirational appeal more frequently. In contrast, male followers reported that their leaders used exchange, so called "hard tactics," more frequently.     

Intentional forgetting benefits from thought substitution

This study provides both experimental and correlational evidence that forgetting in the think/no-think paradigm (Anderson & Green, 2001) is sensitive to the substitution of thoughts about new events for thoughts that are to be suppressed. All the participants learned a list of adjective-noun pairs. Then the adjectives were presented as cues for recalling half of the nouns and as cues for suppressing the other half, 0, 2, or 12 times.Aided participants were provided with substitute nouns, to use during suppression. On a final test that requested recall of all initially learned nouns, aided participants showed evidence of below-baseline forgetting of suppressed nouns.Unaided participants produced below-baseline forgetting only if their later self-reports indicated that they had complied relatively well with instructions for suppression. Independently, forgetting in the unaided condition was more successful when the participants reportedly thought about something else during suppression trials. In general, the use of selfinitiated strategiesseems to affect the degree of forgetting in the think/no-think paradigm.     

The role of the GABA(A) agonist muscimol on memory performance: reward contingencies determine the nature of the deficit

A matching-to-position (MTP) paradigm was altered to influence the type of associations a rat would use to solve the task. Our main behavioral manipulation was the application of the differential outcomes procedure (DOP). The DOP involves correlating each to-be-remembered event with a distinct reward condition. This procedure results in the development of unique reward expectancies that enhance and guide choice behavior. Such distinct reward expectancies are not formed when either a common or random assignment of reward is used (a non-differential outcomes procedure [NOP]). Intracerebroventricular infusions of the amnestic agent muscimol (GABA(A) agonist) or aCSF were delivered to male rats trained on a delayed MTP task that implemented either the DOP or the NOP. Muscimol impaired performance in a dose dependent fashion in both groups--but the nature of the deficit differed as a function of reinforcement contingencies. Rats trained with the DOP displayed a non-mnemonic delay-independent impairment: performance at all delay intervals was disrupted. In contrast, NOP-trained rats displayed a delay-dependent impairment demonstrating that muscimol can also have memory-disrupting effects. The difference in pattern of impairment appears to be a function of the associations formed during training and the type of cognitive strategies involved in maintaining behavior on a conditional delayed discrimination task when reinforcement contingencies are varied. Thus, these results demonstrate that increasing GABA(A) receptor activation impairs a range of associative and memory functions.     

Anxiety-related differences in affective categorizations of lexical stimuli

Effects of emotional valence on attention have been shown to occur even when stimuli are presented outside awareness. The impact of negative valence on stimulus processing has been demonstrated to be particularly salient in anxiety. Therefore, it has been hypothesized that compared to nonanxious individuals, anxious individuals have an enhanced ability to detect the valence of negative stimuli. However, it remains unclear whether anxious individuals are better at identifying the valence of threatening stimuli or, rather, more likely to label ambiguous stimuli as threatening. To investigate these hypotheses, high and low anxious participants categorized lexical stimuli as "safe" or "dangerous." Stimuli were presented at durations that allowed for both conscious (unmasked) and nonconscious (masked) processing. Results show that on masked trials, anxious individuals evidenced an enhanced ability to correctly classify threatening information, whereas nonanxious participants demonstrated an enhanced ability to correctly classify neutral or positive information. Signal detection analyses indicated results were explained by a response bias, whereby anxious individuals were more likely than nonanxious individuals to categorize masked words as threatening and nonanxious individuals were more likely to categorize masked words as nonthreatening. No group differences for nonword stimuli emerged, suggesting that anxiety-related response bias tendencies are activated only after detection of a weak semantic signal.     

The effects of hippocampal lesions on learning, memory, and reward expectancies

The hippocampus appears to be critical for the formation of certain types of memories. Hippocampal-lesioned animals fail to exhibit some spatial, contextual, and relational associations. After aspiration lesions of the hippocampus and/or cortex, male rats were allowed to recover for three weeks before being trained on a matching-to-position task. The matching-to-position task was altered to influence the type of cognitive strategies a subject would use to solve the task. The main behavioral manipulation was the reinforcement contingency assignment: Use of a differential outcomes procedure (DOP) or a nondifferential outcomes procedure (NOP). The DOP involves correlating each to-be-remembered event with a distinct reward condition via Pavlovian trace conditioning, whereas the NOP results in random reward contingency. We found that hippocampal lesions did retard learning the matching rule, regardless of the reinforcement contingency assignment. However, when delay intervals were added to the task memory performance of subjects with hippocampal lesions was dramatically impaired--if subjects were not trained with the DOP. When subjects were trained with the DOP, the hippocampal lesion had a marginal effect on delayed memory performance. These findings demonstrate two important points regarding lesions of the hippocampus: (1) hippocampal lesions have a minimal effect on the on the ability of rats to use reward information to solve a delayed discrimination task; (2) rats with hippocampal lesions have the ability to learn about reward information using Pavlovian trace conditioning procedures.     

Calibrating the sociometer: the relational contingencies of self-esteem

A longitudinal daily diary study examined how chronic perceptions of a partner's regard for oneself might affect the day-to-day relational contingencies of self-esteem. Married partners each completed a diary for 21 days, and completed measures of satisfaction twice over the year. Multilevel analyses revealed that people who chronically felt more positively regarded compensated for one day's acute self-doubts by perceiving greater acceptance and love from their partner on subsequent days. In contrast, people who chronically felt less positively regarded by their partner internalized acute experiences of rejection, feeling worse about themselves on days after they feared their partner's disaffection. Over the year, such self-esteem sensitivity to rejection predicted declines in the partner's satisfaction.     

“What Button Do I Press?” the Consequences of Conducting a Service Learning Project with Senior Citizens

In an effort to build interest in the two-year old service learning center and to fulfill its mission to integrate academic life with service in thoughtful and relevant ways, a competition was held to award developmental grants to faculty to create innovative courses incorporating service learning. The winning proposal from the business school used a business ethics course as the vehicle for formally introducing service into the business curriculum. This paper will tell the story of the intended and unintended consequences of building collaboration on several levels: between generations, between college and community, between faculty and college resources, between student teams, and between theory and practice.     

BDNF Regulates the Intrinsic Excitability of Cortical Neurons

Neocortical pyramidal neurons respond to prolonged activity blockade by modulating their balance of inward and outward currents to become more sensitive to synaptic input, possibly as a means of homeostatically regulating firing rates during periods of intense change in synapse number or strength. Here we show that this activity-dependent regulation of intrinsic excitability depends on the neurotrophin brain-derived neurotrophic factor (BDNF). In experiments on rat visual cortical cultures, we found that exogenous BDNF prevented, and a TrkB–IgG fusion protein reproduced, the change in pyramidal neuron excitability produced by activity blockade. Most of these effects were also observed in bipolar interneurons, indicating a very general role for BDNF in regulating neuronal excitability. Moreover, earlier work has demonstrated that BDNF mediates a different kind of homeostatic plasticity present in these same cultures: scaling of the quantal amplitude of AMPA-mediated synaptic inputs up or down as a function of activity. Taken together, these results suggest that BDNF may be the signal controlling a coordinated regulation of synaptic and intrinsic properties aimed at allowing cortical networks to adapt to long-lasting changes in activity.     

Multicultural Issues in School-Based Consultation Conceptual and Research Considerations

In this article, we review literature relevant to multicultural issues in school-based consultation. Specifically, multicultural literature in the counseling and psychotherapy fields is presented as it relates to consultation. Ways in which culture may affect the consultant, consultee, and client are suggested. Because of the paucity of multicultural research in consultation and lack of major break-throughs in multicultural research as related to consultation, a conceptual framework related to the utility of multicultural issues is presented as a new paradigm for future investigations.     

Network Knowledge Organization: Do Knowledge Structures for Sexual and Emotional Information Reflect Gender or Sexual Orientation?

Network theory conceptualizes the organizationof semantic information as nodes within a net-likestructure. Links within the network representassociations among knowledge structures or concepts andhave been viewed as forming the basis of humansemantic memory (Quillian, 1962). Network models haverecently been employed in emotion theory (Bower, 1981;Lang, 1984) and in research in human sexuality (Geer, 1996; Rabalais & Geer, 1996; Smith,Eggleston, Gerrard, & Gibbons, 1996). As a result ofthat research, stable gender differences in theorganization of knowledge for sexual and emotionalinformation have begun to be identified (see Geer &Manguno-Mire, 1996, for a review). These differences inknowledge organization have been shown to map well ontoexisting research demonstrating gender differences in sexual attitudes, fantasies, and behavior(Geer & Manguno-Mire). The present study employs thePathfinder computer algorithm (Schvaneveldt, 1990) tocompare the cognitive associative networks of heterosexual men and women and gay men andlesbians. Ninety homosexuals (49 gay men and 41lesbians) and 95 heterosexuals (48 men and 47women)rated all pair-wise combinations of 16 wordsrelevant to sexuality and emotion. The sample was predominantlyCaucasian (90%). Four percent of participants wereAfrican-American, 3% were Hispanic American, 1% wereAsian American. Analysis of our dependent variable(number of links on relevant concepts) revealed genderand sexual orientation differences in the total numberof links in associative networks, the number of linkswithin relevant sexual and emotional word clusters, between relevant word clusters, and onindividual words. Results are interpreted in light ofrelevant theories of gender and sexualorientation.