The labtop Macintosh: An interface and communications software for experiment control of animal learning research

A peripheral interface and communications software are described that allow the Macintosh Plus microcomputer to control experiments in animal learning. A Walter/Palya experiment control board (ECB; Walter & Palya, 1984), connected to the Macintosh by a RS-232 modem cable, operates as the I/O interface. The Hayes-Smartcom II software provides an easily operated communications link through menu and icon commands. Smartcom II allows the Macintosh to transmit experiment control tasks to the ECB and to collect and store obtained data. Network communication over a single RS-232 modem cable is also described.     

Perceptions of coercive sexual behavior by males and females

In this study male and female subjects were given six vignettes depicting heterosexual interactions between acquaintances. The vignettes described sexual advances representing different points along a coerciveness continuum. The gender of the aggressor and the victim were varied. The subjects were then asked to indicate their perception of the degree of coerciveness involved. In addition, they were asked to attribute both positive and negative feelings to the victim. The results indicated that male subjects perceived these sexual advances as slightly more coercive when the victim was a female, whereas females perceived the advances as slightly more coercive when the victim was a male. Also, there was a tendency to view the low-coercion activities as more coercive when the males were the victim, whereas the opposite was true for the vignettes rated high on coercion, especially the one describing physical coercion. The attributions of positive and negative feelings tended to parallel the coerciveness ratings. Typically, the more coercive activity was seen as, the less positive feelings and more negative feelings the subjects attributed to the victim. The results were discussed in terms of stereotypical beliefs regarding the sexuality of males and females and attribution theory.     

Report of the ACA Ethics Committee: 1994–1995

This report contains data about ethical complaints and inquiries processed by the Ethics Committee in 1994–1995. The number of complaints was substantially lower than the preceding year and there were also changes in the nature of the complaints. Most common standards called under this year's complaints had to do with dual relationships, meeting personal needs at the expense of the client, failure to terminate a counseling relationship if unable to be of assistance to the client, and violation of the responsibility to meet high ethical standards in various professional settings. This report also includes a discussion of the findings, information about the approval of the new Code of Ethics and Standards of Practice, and educational efforts undertaken by the committee.     

Intrusion patterns in rapid serial visual presentation tasks with two response dimensions.

A rapid serial visual presentation (RSVP) paradigm using both one and two response dimensions was used to test parallel processing models of stimulus dimensions. Fifty subjects were asked to report the identity and/or color of a target uppercase word inserted in a series of lowercase words. The results produced a predominance of posttarget intrusions for color responses and a predominance of pretarget intrusions for identity responses. The requirement of a response to a second dimension impaired hit rates but did not change the pattern of intrusions. An examination of the distributions of intrusions in each response dimension as a function of the response given to the other dimension showed an unexpectedly high percentage of simultaneous hits, a moderate covariation between both responses, and the same patterns of intrusions when compared with the general distributions. While these results seem to be compatible with parallel models of processing for stimulus dimensions, two modifications to this model are suggested. First, the processing of response dimension(s) needs some attentional resources. Second, provision for a mixed model is indicated, which would include trials where no illusory conjunctions are formed.     

Developmental flavor experience affects utilization of odor, not taste in toxiphobic conditioning

Feeding experiences were varied in developing rats and the effects upon flavor neophobia and lithium chloride-induced flavor aversions were observed. In Experiment 1, nursing experience of neonate rats was reduced by artificial feeding via intragastric cannula; the rats then were tested with apple juice paired with lithium chloride injection at weaning or maturity. Conditioned aversions were not affected, but neophobia to novel apple juice was attenuated in artificially-reared rats tested at maturity. In Experiment 2, rats received enriched feeding experience after weaning, which consisted of (a) obtaining many complex flavors, a few of which were paired with poisoning, effortlessly in the home cage, or (b) foraging for various foods on an elevated maze. No dramatic effects on neophobia or conditioned taste aversion for saccharin water were apparent. In Experiment 3, rats were given experience after weaning with vanilla-scented water either paired or unpaired with quinine water, and then tested with the odor of almond or that odor compounded with saccharin water for neophobia and lithium-induced aversions. Flavor-experienced rats exhibited more pronounced odor conditioning and more resistance to extinction of the odor aversion after both simple and compound conditioning. In contrast, saccharin taste aversions were relatively unchanged. Apparently, enriched feeding and drinking experience facilitates the utilization of odor more than taste cues.     

Continuation of training as a variable influencing the generalization of speech in a retarded child

Imitation and differential reinforcement were applied in training a speech-deficient retarded child 4 separate verbal answers to 4 “everyday” questions. Training was provided in only one setting with one experimenter. After the subject had acquired each answer-response in the training situation, probes for stimulus generalization were given by both the trainer and nontrainers. These probes tested the usage of both trained and nontrained question-answering responses under nontraining conditions. Use of the separately trained responses in nontraining contexts increased as training continued beyond the established learning criteria. A concurrent reinforcement procedure for all 4 answerresponses increased the overall generalization effects across individuals and settings; the use of differential reinforcement of nonverbal responses in the training setting decreased the overall generalization effects.