Retinal rivalry and Troxler’s effect: A correlation

Retinal rivalry and Troxler disappearances were measured in 30 Ss. Correlations suggesting a significant relationship between the two phenomena are reported. Tentative interpretation of the data are presented.     

BIOFEEDBACK AND RATIONAL-EMOTIVE THERAPY IN THE MANAGEMENT OF MIGRAINE HEADACHE

Twenty-four migraine patients were randomly assigned to one of four conditions: (a) self-monitoring of headache activity (waiting list), (b) frontalis EMG biofeedback, (c) digit temperature biofeedback, and (d) digit temperature biofeedback plus Rational-Emotive Therapy (RET). Bidirectional control over the target physiological response was assessed through a reversal design in each session. Following at least a four-week baseline, the three biofeedback groups received 8 to 10, 30-minute sessions of bidirectional biofeedback training, scheduled twice a week. Subjects in the combined digit temperature biofeedback plus RET group received three 40-minute sessions of RET as an addition to the third, fifth, and seventh biofeedback sessions. Records of daily home practice were kept throughout treatment and three-month followup. Subjects on the waiting list monitored headaches for at least five months, corresponding to “baseline”, “treatment”, and three-month followup. Digit temperature biofeedback alone and in conjunction with RET did not prove to be more effective than the control conditions. All the EMG subjects reduced headache activity to two-thirds or less of the baseline level by the third month of followup. Bidirectional digit temperature performance did not improve with training, was demonstrated in only 33% of the biofeedback sessions, was not maintained over time, and was unrelated to improvement in headache activity. EMG subjects reported biofeedback performance to be an easier task and met the performance criterion on 85% of the sessions. The frequency of home practice contributed over 55% of the variance in retrospective estimates of headache improvement but was not related to changes in daily records of headache activity.     

Preference for information about intensity of signaled tailshock

Three experiments are reported which were designed to demonstrate preference for signaled shock and to delineate the roles of the preparatory-response, information-seeking, and signaled-safety hypotheses of this phenomenon. Experiment 1 demonstrated a preference for a signal-tailshock condition over a tailshock-signal condition in a shuttlebox. In Experiment 3, rats were exposed to signaled tailshock of two intensities in both compartments of the shuttlebox, but in one compartment the signals provided information about the intensity of the impending tailshock, whereas in the other compartment the signals did not. The tailshock intensities were .6 and 1.3 mA for one group and .6 and 1.8 mA for a second group. Experiment 2 assured that even the smaller intensity difference was readily discriminable. For Group .6-1.8 a significant preference for the condition in which the signals predicted the intensity of the impending tailshocks was obtained, but no preference for either condition was found for Group .6-1.3. As signaled safety was equated in the two compartments of Experiment 3, the observed preference cannot be accounted for by the signaled-safety hypothesis. Information seeking cannot explain the lack of preference in Group .6-1.3 as the difference between those two intensities was proven discriminable in Experiment 2. Assuming that sufficient differences in shock intensity yield different preparatory responses, the present results are compatible with the preparatory-response hypothesis and suggest that preparatory responding plays a role in producing the preference for signaled shock.     

Duplex perception of cues for stop consonants: Evidence for a phonetic mode

When the (vocalic) formant transitions appropriate for the stops in a synthetic approximation to [spa] or [sta] are presented to one ear and the remainder of the acoustic pattern to the other, listeners report a duplex percept. One side of the duplexity is the same coherent syllable ([spa] or [sta]) that is perceived when the pattern is presented in its original, undivided form; the other is a nonspeech chirp that corresponds to what the transitions sound like in isolation. This phenomenon is here used to determine why, in the case of stops, silence is an important cue. The results show that the silence cue affects the formant transitions differently when, on the one side of the duplex percept, the transitions support the perception of stop consonants, and when, on the other, they are perceived as nonspeech chirps. This indicates that the effectiveness of the silence cue is owing to distinctively phonetic (as against generally auditory) processes.     

THE INFLUENCE OF HEAT UPON INTELLECTUAL TEST PERFORMANCE AND CARDIAC ACTIVITY OF THREE GROUPS IN THE NEGEV DESERT1

This study was conducted to determine if exposure to heat at 45 ^deg;C, influences mental test performance and heart rates of different ethnic groups living in the same area of a semi-desert zone. Forty-eight adolescent highschool boys of Israeli nationality (but whose fathers were of Bedouin, Moroccan or Eastern European background) were paid for their participation. Each of the boys was individually tested under control or heat conditions by an experimenter from the same ethnic background on a Raven 38 and WISC Coding B task. Mental test performances were unaffected by either one or two hours of heat although heart rates increased. More basic than heat was ethnic membership and test scores corresponded more to assumed experience with tests than to any other factor. Heart rate patterns were also different between the 3 groups suggesting fundamental physiological divergence.     

Gottfredson的职业抱负发展理论简介与研究评述

戈特弗雷德森（L.S.Gottfredson）的职业发展理论是有关职业抱负的内容及其发展的理论。该理论从职业类型、社会地位和性别类型3个维度对职业抱负的发展进行了论述,并提出了职业抱负的发展阶段论和决策过程中的妥协论。该文首先对戈特弗雷德森的职业抱负的发展理论做了简要介绍,然后从职业抱负的范围限定和妥协过程两个方面对已有的有关研究进行了回顾,并提出了已有研究中存在的问题和不足,最后论述了职业抱负发展理论在学校职业辅导中的应用     

Promising New Developments in the Therapist–Client Relationship: A Philosophy of Science Review and Preview

Two questions were central: What are the current and what were the past new developments in the therapist–client relationship? By means of a “philosophy of science analysis,” what principles may be taken as helping to account for these new developments? Nine principles were identified in a review, including the articles in the present theme issue of the journal. The proposal and invitation are to use these nine principles to generate further, future, promising new developments in the therapist–client relationship.