Inhibition of the LH Surge by Restraint Stress in Cyclic Rats: Studies on the Role of GABAA and GABAB Receptors

There is evidence that stress can alter the activity in the brain of gamma-aminobutyricacid (GABA), a neurotransmitter that has been implicated in the regulation of LH secretion. In the present study the role of GABA in the restraint stress-induced inhibition of the LH surge was investigated in the intact cyclic rat. Intracerebroventricular (icv) administration of the GABAA receptor agonist muscimol (0.1, 0.5 or 1 μg) 5 min before the presumed onset of the pro-oestrous LH surge (at 0900 h) caused a dose dependent suppression of the surge. A single dose of the GABAB receptor agonist baclofen (1 μg; icv) injected at 0855 h postponed the onset of the LH surge, and repeated injections at 0855 and 1130 h suppressed the surge. These data indicate that GABA-ergic activity in the brain can inhibit the LH surge in the cyclic rat via GABAA and GABAB receptors. Pro-oestrous rats were subjected to 5 hrs of restraint starting at 0855 h. Pretreatment with the GABAA receptor antagonist bicuculine (1 μg; icv) at 0840, 0940 and 1040 h or pretreatment with the GABAB receptor antagonist phaclofen (10 μg; icv) at 0840 h were ineffective in preventing the restraint-induced inhibition of the LH surge. The results suggest that GABAA and GABAB receptors are not involved in the inhibitory effect of restraint stress on the LH surge.     

Supervisory guidance and behavioral integrity: relationships with employee citizenship and deviant behavior

The authors examined the effects of supervisory guidance (providing instruction to employees) and behavioral integrity (a pattern of word-deed alignment) on employee organizational citizenship behavior (OCB) and deviant behavior. Results revealed a pattern of Supervisory Guidance x Behavioral Integrity interaction effects, such that relationships between guidance and outcome variables were dependent on the level of behavioral integrity exhibited by supervisors. The interactions suggest a positive relationship between supervisory guidance and OCBs when behavioral integrity is high but also a positive relationship between guidance and deviant behavior when behavioral integrity is low. These results were consistent across 2 independent field samples: 1 assessing individual employee perceptions of supervisory behavior and the other assessing aggregate perceptions of supervisory behavior among employees in bank branches.     

A Three-Factor Experimental Analysis of Promises and Threats

A questionnaire study was conducted to examine the extent to which variations in the language of promises and threats differentially affect compliance as well as perceptions of the transmitters of these influence attempts. Subjects were asked to imagine that they had been assigned a partner for collaborative work on a project, for which the topic had not yet been decided. In an attempt to persuade them of the value of his topic, the partner (experimenter) sent subjects one of eight promises and threats, which varied along three dimensions: orientation to the consequences of compliance (reward or nonpunishment) vs. noncompliance (punishment or nonreward); transmitter versus recipient orientation of the statement's premise; and transmitter versus recipient orientation of the statement's conclusion. The results indicate that recipient-oriented premise statements and statements of contingent reward or nonpunishment are seen as both more attractive and more likely to gain compliance than those that have a transmitter-oriented premise or that express contingent punishment or nonreward. In addition, compliance was found to be strongly related to a transmitter's attractiveness, but to neither his perceived power nor his activity. The implications of these findings for future research and the resolution of a variety of conflicts were discussed.     

Self-perpetuating development of encoding biases

The process of encoding new information involves the imposition of preexisting interpretive categories on newly encountered stimuli, even if the categories do not match perfectly those stimuli. We hypothesized that such encoding of stimuli as supportive of preexisting encoding dispositions may become a source of a perceiver's subjective experiences that support these dispositions. Through this nonconsciously operating mechanism, encoding rules may gradually develop in a self-perpetuating manner, even in the absence of any objectively supportive evidence. Results demonstrated this self-perpetuating process in three studies involving different stimulus materials and experimental tasks (matrix-scanning paradigm and two "intuitive judgment" tasks). The self-perpetuating development of encoding biases is discussed as one of the elementary mechanisms involved in the development of interpretive categories and other individually differentiated cognitive dispositions.     

Birth order and person perception dispositions

The early social experiences of firstborn, laterborn, and only children were analyzed from the viewpoint of how those experiences influence the child's general image of human nature. It was hypothesized that there are some differences in the centrality of an evaluative dimension, that are related to birth order. Subjects in Poland and in the United States rated 20 known stimulus persons on 25 trait dimensions. The results supported the hypotheses and seem to point to some origins of individual differences in certain person perception processes.     

On the status of nonconscious processes in human cognition: comment on Reber

Two issues are discussed. The first one pertains to the generality of the nonconscious learning processes and their somewhat paradoxical status in cognitive psychology. We argue that the ability of the human cognitive system to nonconsciously acquire complex knowledge structures is one of its elementary and indispensable properties. Moreover, the existence of this ability constitutes one of the necessary metatheoretical assumptions of contemporary cognitive psychology. Nevertheless, the contemporary cognitive psychology literature often implies that it is only one of many controversial and unusual phenomena. The second issue pertains to the distinction between the so-called primitive unconscious and the sophisticated unconscious as proposed by Reber (1989).     

Repairing violations of trustworthiness in negotiation

There has been an ongoing debate in the research literature on violations of trustworthiness and the effectiveness of various forms of repair. In this article, three studies compare the effectiveness of several variables hypothesized to repair perceived trustworthiness in a negotiation context: (a) the use of words (accounts or apologies) versus deeds (compensation for the costs of violation), separately and in combination; (b) whether words or deeds pointed to the past or to the future; (c) the effect of an active or passive third‐party monitor of the negotiation, and (d) the type of trustworthiness (competence versus integrity) that was violated. Results show support for the repair effects for deeds over words, and that a focus on the past violation (through either words or deeds) is more effective than looking toward the future. Deeds, rather than words, also accounts for the strong impact of the combination of the two courses of action. In addition, results show that an active third‐party intervention has a stronger impact on repair than a passive intervention. Implications for theory and practice are discussed along with suggestions for future research.