A comparison of latent inhibition and learned irrelevance pre-exposure effects in rabbit and human eyeblink conditioning

The learning of an association between a CS and a US can be retarded by unreinforced presentations of the CS alone (termed latent inhibition or LI) or by un-correlated presentations of the CS and US (termed learned irrelevance or LIRR). In rabbit eyeblink conditioning, there have been some recent failures to replicate LI. LIRR has been hypothesized as producing a stronger retardation effect than LI based on both empirical studies and computational models. In the work presented here, we examined the relative strength of LI and LIRR in eyeblink conditioning in rabbits and humans. In both species, a number of pre-exposure trials sufficient to produce LIRR failed to produce LI (Experiments 1 & 3). Doubling the number of CS pre-exposures did produce LI in rabbits (Experiment 2), but not in humans (Experiment 4). LI was demonstrated in humans only after manipulations including an increased inter-trial interval or ITI (Experiment 5). Overall, it appears that LIRR is a more easily producible pre-exposure retardation effect than LI for eyeblink conditioning in both rabbits and humans. Several theoretical mechanisms for LI including the conditioned attention theory, stimulus compression, novelty, and the switching theory are discussed as possible explanations for the differences between LIRR and LI. Overall, future work involving testing the neural substrates of pre-exposure effects may benefit from the use of LIRR rather than LI.     

Providing a treatment rationale for PTSD: Does what we say matter?

Little is understood about the factors that influence a woman's preference for a particular type of treatment after an assault. Furthermore, it remains unclear the extent to which providing detailed information such as the mechanism underlying a treatment or its side effects can affect a client's treatment preference for psychotherapy or pharmacotherapy. The current study of 324 women with varying degrees of trauma exposure and posttraumatic stress symptoms experimentally manipulated the content of treatment rationales for two common PTSD treatments: sertraline (SER) and prolonged exposure (PE). Specifically, both information regarding the hypothesized mechanism of the treatment and treatment side effects were manipulated. In general, personal reactions were more positive and credibility was stronger for psychotherapy than pharmacotherapy. This preference for the psychotherapy persisted regardless of specific information presented in the treatment rationale. For those reporting heightened hyperarousal and those of minority status, there was an increased likelihood of more positive reactions to sertraline. The results highlight assessment of treatment-related beliefs and preferences early on in the therapeutic process. Ultimately, understanding the factors that shape treatment preferences may contribute to the development of personalized treatment strategies that integrate preferences and attitudes about treatment as a way of bolstering adherence and outcome.     

Monitoring Online Training Behaviors: Awareness of Electronic Surveillance Hinders E‐Learners1

Web‐based training programs commonly capture data reflecting e‐learners' activities, yet little is known about the effects of this practice. Social facilitation theory suggests that it may adversely affect people by heightening distraction and arousal. This experiment examined the issue by asking volunteers to complete a Web‐based training program designed to teach online search skills. Half of participants were told their training activities would be tracked; the others received no information about monitoring. Results supported the hypothesized effects on satisfaction, performance, and mental workload (measured via heart rate variability). Explicit awareness of monitoring appeared to tax e‐learners mentally during training, thereby hindering performance on a later skills test. Additionally, e‐learners reported less satisfaction with the training when monitoring was made salient.     

Power,Empowerment, and Equality: Evidence for the Motives of Feminists,Nonfeminists, and Antifeminists

Both feminists and antifeminists claim they do not seek to dominate others, and accuse their ideological opponents of an insidious desire for power. The purpose of this study was to examine the motives of feminists, nonfeminists, and antifeminists by assessing their values in a context in which they would not feel that their motives regarding feminism were being scrutinized. Participants were 126 mostly European-American students. Antifeminist men placed more emphasis on their own power than did other men; but antifeminist, nonfeminist, and feminist women did not differ in emphasis placed on power. Among both men and women, antifeminists placed little importance on equality. Feminist women placed more importance on equality than did nonfeminist women, who in turn placed more importance on equality than did antifeminist women.     

Impact of Two Clinical Peer Supervision Models on Practicing School Counselors

Two forms of clinical peer supervision were provided for a sample of 29 practicing school counselors. Pre- and posttest measures were used to assess the counselors' level of job satisfaction, counseling self-efficacy, and counseling effectiveness (including empathic responding, adaptability and flexibility in counselor response, and client behavior change). The sample was divided into 3 groups (2 treatment and 1 control). Each supervision treatment lasted 9 weeks. None of the analyses of covariance examining treatment effects were significant. However, these individually nonsignificant results showed movement in the hypothesized direction in each instance, indicating small but pervasive effects of treatment. Participants' qualitative session evaluations also supported the helpfulness of clinical peer supervision for school counselors. Implications for future research and the practice of school counselor supervision are discussed.     

An Analysis of Significant Events in Counseling

Using an interview/questionnaire procedure, 19 clients reported 200 helpful, significant events that occurred in ongoing counseling. Each event consisted of one issue presented by the client, the counselor's response to that issue, and the immediate impact the client received from the counselor's response. With the use of qualitative analysis, 9 prominent patterns describing sequences of client change emerged from the data. These patterns were grouped into 3 superclusters of events: Dissonant, Question—Answer, and Congruent. These superclusters and the 9 prominent patterns were used to develop a model for counseling change. Implications for counseling theory and practice are discussed.     

Parallel structure: A source of facilitation in sentence comprehension

Reading time for the second clause of a conjoined sentence was found to be faster when the clause was structurally similar to the first clause than when the clausal structures differed. This “parallel structure” effect was found for each of several types of structures, including active versus passive constructions, direct object versus sentential complement (minimal vs. nonminimal attachment), nonshifted versus shifted heavy noun phrase, agent versus theme, and animate versus inanimate noun phrase. The pervasiveness of the effect ruled out some hypotheses about its basis, including the hypothesis that it would occur only when a subject’s just having processed a structure would affect how temporary ambiguities are resolved. Detailed analysis of the data suggested the existence of several distinct sources of the effect and provided indirect evidence that people typically compute both a surface structure and an S-structure representation of a sentence.     

Attltudes Towards AIDS and Homosexuals: Gender, Marital Status, and Religlon

The current study investigates the relationship between fear of AIDS and homophobia. The role of gender, marital status, religion, and church attendance as possible mediating variables in the hypothesized relationship was also investigated. Responses of 507 subjects to questionnaires indicated that men and women reported the same level of fear of AIDS; however, men were more homophobic than women. There was no difference between single and married individuals in the level of fear of AIDS; but people who had never been married were more homophobic than married individuals. There was also no relationship between religiosity and fear of AIDS. There were, however, differences in levels of homophobia across denominations. Finally, there was a relationship between church attendance and both fear of AIDS and homophobia. The results are compared to those obtained by Bouton and his colleagues 5 years earlier and implications for educational programs designed to change attitudes toward AIDS and homosexuality are discussed.