Collaborative Inhibition and Semantic Recall: Improving Collaboration Through Computer‐mediated Communication

Two experiments investigated the recall of nominal and collaborating groups to test the following hypotheses: (i) semantic memory, as well as episodic memory, is disrupted by collaborative recall and (ii) both episodic and semantic recall will be greater in groups collaborating via computer‐mediated communication (CMC) than groups collaborating face to face. Experiment 1 investigated different collaborative constellations (nominal, face to face and parallel CMC) in a series of episodic and semantic word recall tasks. In Experiment 2, collaborative groups (nominal, face to face, parallel CMC and cyclic CMC) completed a Scrabble task in which they were required to generate words from a set of 12 letters. Both experiments demonstrated that collaborative inhibition was present in semantic recall. Parallel CMC improved recall by comparison with face‐to‐face collaboration in both experiments, whereas cyclic CMC did not. The underlying causes of collaborative inhibitory effects and the potential for reducing them with CMC are discussed.Copyright © 2016 John Wiley & Sons, Ltd.     

The Induction of Self-Reliance: An Experimental Study of Independence in the Face of Failure*

The development of dependency, rather than autonomy, in professional and paraprofessional helping relationships represents a practical and theoretical problem. In the present research an attempt is made experimentally to examine this issue from the viewpoint of the self-perception hypothesis. From this perspective, immersion in the successful helping dyad was expected to foster an increased belief in self as other-reliant, and, through cognitive balance, a lessened belief in self as self-reliant. The fiidings indicate that such different dimensions of help as intensity, duration, and choice variously affect these attributions to self, and that these attributions in turn affect the strength of behavioral independence when failure is encountered outside the helping dyad. Some practical and theoretical implications are discussed concerning the role of induction from self-performance in mapping self-related beliefs.     

Effect of timing of information about mitigating circumstances on emotional responses to provocation and retaliatory behavior

To determine whether the reduction of retaliatory behavior by knowledge of mitigating circumstances is due to less motivation to retaliate or to an inhibition of motivated retaliation, subjects were provoked by a rude experimenter and informed of mitigating conditions (a) before provocation, (b) after provocation, or (c) not at all. Physiological data revealed that prior knowledge of mitigation prevented pronounced excitatory responses to prococation. In contrast, when mitigating conditions were not known, excitatory responses to provocation were intense. In addition, when mitigating information was supplied after provocation, excitatory responses decayed more rapidly than when no such information was supplied. Retaliatory behavior, as measured in complaints about the rude experimenter, was substantially lower in the condition in which mitigation preceded provocation than in the other two conditions. The retaliatory behavior of subjects who were informed of mitigation after being provoked did not differ significantly from that of subjects who were not informed of mitigation. The findings were interpreted as incompatible with the assumption that under mitigating conditions retaliation is motivated but inhibited and as generally supportive of the proposal that mitigation attenuates the response to provocation. In order to explain the failure of the reception of mitigating information after provocation to reduce retaliatory behavior in spite of the observed facilitation of excitatory decay, it was suggested that when subjects were experiencing high levels of anger, they formed a behavioral disposition to retaliate, which outlasted the state of elevated arousal.     

Properties of feature detectors for speech: Evidence from the effects of selective adaptation on dichotic listening

Two selective adaptation experiments were conducted in order to investigate certain properties of feature detector systems sensitive to the information underlying the voicing distinction (Experiment I) and the place of articulation distinction (Experiment II). The experimental paradigm combined binaural adaptation with a dichotic testing procedure. The stimuli were nonboundary, good exemplars of the respective phonetic categories. In both experiments, there was a systematic shift in performance following adaptation on those trials on which the stimulus in one ear had the adapted feature value and the stimulus in the other ear had the unadapted feature value. On these trials, the adapted feature value was relatively less effective in competing for processing with the unadapted value in the opposing ear (compared to preadaptation performance). Since these results were obtained using nonboundary stimuli, it was argued that (1) adaptation affects the relevant detector along its range of operation or sensitivity, and nof simply at the phonetic boundary, and that (2) information regarding the relative output level of the detector, as well as which detector was more strongly excited, must be available at the site of interaction of the two stimuli.

     

Studies on the categorization of speech by infants

It is well-known that complexities exist in the mapping between the acoustic information in the speech signal and the phonetic categories of adult language users. We investigated whether the same complexities exist in the mapping between the speech signal and the forerunners of these categories in infants. For two classes of complexity, we found that the manner in which the categorization of information for speech occurs was virtually identical in infant and adult listeners. These findings indicate that the infant possesses finely tuned linguistically-relevant perceptual abilities, which undoubtedly facilitate and shape the task of language acquisition.     

Sentence comprehension by Broca's aphasics: Effects of some suprasegmental variables

Three subtests of comprehension (one of varying sentential stress, one of shifting juncture, and one of applying emphatic stress to functors) were administered to eight Broca's aphasics and eight controls to determine the effects of stress and juncture on disambiguation of these sentences. Data indicated that the aphasic group performed significantly worse than the normals on all three subtests of comprehension. In addition, there was a strong positive correlation between severity of aphasia and error scores for all three tests. Results are discussed in relation to intact-vs.-disordered comprehension.     

The Bransford-Franks linear effect: Integration or artifact?

It was hypothesized that the Bransford-Franks linear effect is an artifact of the method of presentation of stimulus sentences and is unrelated to semantic processes. Ss were given sentences containing the same information in one of two ways. In a control condition, which was identical to the procedure used in earlier research, overlapping combinations of ideas were presented during learning and recognition; in an experimental condition, ideas were presented one at a time. Results demonstrated that one-idea sentences received significantly higher recognition confidence ratings in the experimental condition, thus supporting the artifact interpretation. It was proposed that Ss assign recognition confidence ratings based on the probability that a sentence containing a certain number of ideas could have occurred in acquisition.     

Empathetic perception of emotional displays in films as a function of hedonic and excitatory state prior to exposure

A film clip depicting a young couple in a dysphoric encounter was seen following one of four film segments that were selected and pretested to effect a factorial variation in (a) hedonic tone (positive, negative) and (b) excitatory potential (low, high). Reactions to the subsequent film were assessed via ratings to test predictions from excitation-transfer theory and to determine sequential effects in hedonically valued experiences. In a first experiment, in which the subsequent film was viewed immediately after the antecedent film, a nearly significant distraction effect of excitation occurred, that is, affective responses to the subsequent film were less intense following high-excitation films than following low-excitation films. In a second experiment, in which the procedure employed in the interval between films was changed to foster close attention to the subsequent film, an excitation-transfer effect was observed, with the dysphoric encounter being perceived as sadder after high-excitation films than after low-excitation films. In both experiments, hedonic-set effects were also observed. The role of cognitive adjustment in excitation transfer was discussed.     

Microcomputer-based programmed instruction in identity matching to sample for persons with severe disabilities

Three individuals with mental retardation, who had failed to learn identity matching to sample with standard fading and prompting procedures, were given microcomputer-based programmed instruction. The methods were based on an analysis of two features of typical identity matching procedures: (a) within each trial, the current sample stimulus must control comparison selection, and (b) across trials, specific comparison stimuli must function both as S+ and as S–, depending upon the sample presented (conditional discrimination). During the first phase of training, one-trial acquisition of discriminative stimulus control was established in a nonconditional discrimination context where the S+ or S– functions of specific stimuli did not change from trial to trial. After one-trial learning was established, conditional discrimination was programmed by gradually introducing reversals of S+/S– stimulus functions. All three participants learned to perform conditional identity matching. Avenues for further analysis of the prerequisites for conditional discrimination and continued development of programmed methods are discussed.