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191.
We investigated the effects of self-regulated strategy instruction on the ability of four elementary-school students with mild handicaps (2 with learning disabilities [LD] and 2 with mild mental retardation [MMR]) to perform 4 types of addition and subtraction word problems. We used a multiple baseline design and a self-instructional strategy to address story problem solving. Results indicated that the strategy was effective in increasing the number of correctly solved word problems. Gains were maintained across a 6 and 8 week follow-up check. The study supports previous research indicating that cognitive strategies are effective for students with LD and suggests that cognitive strategies are appropriate for students with MMR. 相似文献
192.
Nirbhay N. Singh Ph.D. Donald P. Oswald Ph.D. Cynthia R. Ellis M.D. Subhashni D. Singh 《Journal of Behavioral Education》1995,5(1):77-91
Three adults with profound mental retardation and very limited reading skills were transitioned to community living after spending more than 20 years in a residential facility. Community-based instruction was used to teach them to independently prepare meals. Directed rehearsal and prompting procedures were used to teach them those meal preparation skills that they were unable to perform independently. We present assessment, training and followup data on the preparation of a dessert by the three participants. Following an assessment on the steps needed to prepare the dessert, training was introduced in a multiple baseline across subjects design. Results showed that the participants were able to independently prepare the dessert in up to 21 pre-training and training sessions. Monthly followup for six months showed that they were able to independently prepare the dessert in various community settings of their choice. 相似文献
193.
Six experiments, each with 5 human adults, were conducted to investigate the determinants of human performance on multiple concurrent variable-interval schedules. A two-key procedure was employed in which subjects' key presses produced points exchangeable for money. Variables manipulated across experiments were (a) changeover delay (Experiments 2, 4, and 6), (b) ordinal cues related to scheduled reinforcement frequencies (Experiments 3 and 4), and (c) instructions describing the ordinal relations between schedule-correlated stimuli and scheduled reinforcement frequency (Experiments 5 and 6). The performances of only 13 of the 30 subjects could be described by the generalized matching equation and were within a range of values typical of those reported in the animal literature. Eight subjects showed indifference, 9 undermatched, 7 approximated matching, 3 overmatched, and a further 3 responded exclusively to the richer component of the concurrent schedules. These differing modes of responding were closely related to the different types of performance rules reported by subjects in postexperimental questionnaires. The results are in good agreement with those from studies of human performance on single schedules, suggesting that rule-governed behavior, in interaction with contingencies, may be an important determinant of human choice. 相似文献
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197.
Willem B. Verwey 《Journal of motor behavior》2013,45(4):343-354
The author assessed the mechanisms underlying skilled production of keying sequences in the discrete sequence-production task by examining the effect of sequence length on mean element execution rate (i.e., the rate effect). To that end, participants (N = 9) practiced fixed movement sequences consisting of 2, 4, and 6 key presses for a total of 588 trials per sequence. In the subsequent test phase, the sequences were executed with and without a verbal short-term memory task in both simple and choice reaction time (RT) paradigms. The rate effect was obtained in the discrete sequence-production task—including the typical quadratic increase in sequence execution time (SET, which excludes RT) with sequence length. The rate effect resulted primarily from 6-key sequences that included 1 or 2 relatively slow elements at individually different serial positions. Slowing of the depression of the 2nd response key (R2) in the 2-key sequence reduced the rate effect in the memory task condition, and faster execution of the 1st few elements in each sequence amplified the rate effect in simple RT. Last, the time to respond to random cues increased with position, suggesting that the mechanisms that underlie the rate effect in new sequences and in familiar sequences are different. The data were in line with the notion that coding of longer keying sequences involves motor chunks for the individual sequence segments and information on how those motor chunks are to be concatenated. 相似文献
198.
Magali Ginet Olivier Dodier Brigitte Bardin Michel Désert Catherine Greffeuille Fanny Verkampt 《The Journal of general psychology》2013,140(4):313-341
The two present studies examined the influence of perspective instructions given during encoding and retrieval on the recall of a visual event. Participants viewed slides or a film depicting a day in the life of a man. Before viewing the to-be-remembered event, they were instructed to adopt the perspective of an alcoholic vs. an unemployed man vs. no perspective (Experiment 1), or of an unemployed man vs. no perspective (Experiment 2). Participants in the first study were interviewed twice, with the second recall being preceded by either a change perspective instruction or without any specific instruction. In the second study, participants were interviewed using either a cognitive interview (CI) or a CI without the change perspective instruction. Results showed that adopting a perspective during encoding impaired recall performance and failed to demonstrate a significant benefit of the change perspective instruction. The theoretical and practical implications of these results are discussed. 相似文献
199.
Three experiments were conducted to examine proactive and retroactive interference effects in learning 2 similar sequences of discrete movements. In each experiment, the participants in the experimental group practiced 2 movement sequences on consecutive days (1 on each day, order counterbalanced across participants) followed by retention tests on the third day. In all, 2 out of 8 target locations differed between the 2 sequences. Experiment 1 established the nature of the interference effects in the present setup. Clear evidence was found for button-specific proactive and retroactive interference effects. Experiments 2 and 3 further probed the mechanisms underlying those effects, by varying the numbers of repetitions (50 or 250) of the 1st and 2nd sequence (Experiment 2) and the hand, dominant or nondominant, with which the sequences were practiced (Experiment 3). Experiment 2 showed that after a mere 50 repetitions, the representation of the movement structure was strong enough to evoke the effects observed in Experiment 1. Experiment 3 revealed that learning with the dominant hand did not result in more pronounced interference effects compared with learning with the nondominant hand. In combination, these results suggest that changes in the representation of the movement structure are primarily responsible for the observed interference effects. 相似文献
200.
When we evaluated variables that influence the effectiveness of the high-probability (high-p) instruction sequence, the sequence was associated with a precipitous decrease in compliance with high-p instructions for 1 participant, thereby precluding continued use of the sequence. We investigated the reasons for this decrease. Stimuli associated with the low-p instruction were systematically added and removed in the context of the high-p instructions, and results suggest that the stimuli associated with the low-p instruction influenced compliance with the high-p instructions. 相似文献