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581.
We evaluated procedures for training supervisors in a residential setting to provide feedback for maintaining direct-service staff members' teaching skills with people who have severe disabilities. Using classroom-based instruction and on-the-job observation and feedback, 10 supervisors were initially trained to implement teaching programs themselves. The training improved supervisors' teaching skills but was insufficient to improve the quality of feedback they provided to direct-service staff regarding the staff members' teaching skills. Subsequently, classroom-based instruction and on-the-job observation and feedback that targeted supervisors' feedback skills were provided. Following training in provision of feedback, all supervisors met criterion for providing feedback to their staff. Results also indicated that maintenance of teaching skills was greater for direct-service staff whose supervisors had received training in providing feedback relative to staff whose supervisors had not received such training. The need for analysis of other variables that affect maintenance of staff performance, as well as variables that affect other important areas of supervisor performance, is discussed. 相似文献
582.
Margaret G. Werts Ed.S. Mark Wolery Ph.D. Ariane Holcombe M.S. David L. Gast Ph.D. 《Journal of Behavioral Education》1995,5(1):55-75
We present a review of the existing research on instructive feedback. Instructive feedback is a method of presenting extra, non-target stimuli in the consequent events of instructional trials (e.g., during praise statements). Students are not required to respond to those additional stimuli and are not reinforced if they do. The research is reviewed in terms of the characteristics of participants involved, the settings and instructional variables used, and the findings that emerged. The findings indicate that a wide range of students by age and disability were included and that most studies occurred in special education contexts. When used with response prompting procedures in a variety of direct instructional arrangements, students acquire and maintain some of the instructive feedback stimuli. Thus, teachers are encouraged to use instructive feedback in their direct instructional activities. Areas of future research include using instructive feedback in new contexts and examining methods for presenting instructive feedback. In addition, the use of instructive feedback to influence future learning and stimulus class formation should be investigated. 相似文献
583.
Social communication in anuran amphibians (frogs and toads) is mediated predominantly by acoustic signals. Unlike most anurans,
the Panamanian golden frog, Atelopus zeteki, lacks a standard tympanic middle ear and appears to have augmented its communicatory repertoire to include rotational limb
motions as visual signals, referred to here as semaphores. The communicatory nature of semaphoring was inferred from experimental
manipulations using mirrored self-image presentations and nonresident introductions. Male frogs semaphored significantly more
when presented with a mirrored self-image than with a nonreflective control. Novel encounters between resident males and nonresident
frogs demonstrated that semaphores were used directionally and were displayed toward target individuals. Females semaphored
frequently and this observation represents a rare case of signaling by females in a typically male-biased communicatory regime.
Semaphore actions were clearly linked to a locomotory gait pattern and appear to have originated as an elaboration of a standard
stepping motion.
Received: 19 March 1998 / Accepted after revision: 25 July 1998 相似文献
584.
The effects of extra stimulus cues, such as pictures and sentences, on learning of preposition words were examined in two experiments. A one-way repeated-measures design was applied in the study. The results show that both sentences and pictures interfered with and blocked the learning of these context-dependent words in the simultaneous presentations. The superiority of feedback presentations over simultaneous presentations indicate that feedback techniques neutralize the blocking effect. More interestingly, however, the prepositions were learned more quickly in the absence of any context cues and this suggested that it is better to teach basic preposition words either by the presentation of them alone or if extra stimulus cues are to be used they should be presented as feedback. 相似文献
585.
We examined 24 studies to determine the effects on word recognition and reading comprehension of correcting errors during oral reading. Corrective feedback improved students' word reading accuracy on words in lists, and accuracy in reading words in passages. Some correction procedures had greater benefits than others. Successful error correction procedures share common characteristics, leading to recommendations about instruction: Teachers should (a) correct errors immediately; (b) require students to repeat the correct response; and (c) match correction procedure to the instructional situation and the learner. Several research recommendations are outlined. 相似文献
586.
Effects of reward distribution and performance feedback on competitive responding 总被引:1,自引:1,他引:0
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Schmitt D 《Journal of the experimental analysis of behavior》1998,69(3):263-273
To implement competitive contingencies, one must select a distribution of unequal rewards and a schedule of feedback for competitors regarding one another's performance. This study investigated three bases for distributing rewards and two performance feedback conditions. Pairs of college students competed over a series of 2-min contests in which the competitive response was a knob pull. A sum of money was divided using a proportional distribution or one of two fixed reward distributions. In the proportional distribution, a subject's proportion of the sum was his or her proportion of the total number of responses. The two fixed distributions were divisions of 100%/0% or 67%/33%. Also, in every contest either subject could make a response that would end the contest prematurely and give both subjects the same amount—a sum equal to 33% of the competitive total. In the two feedback conditions, cumulative responses by each subject were either shown to both subjects during the contest or were not shown. The proportional distribution was clearly superior to either of the fixed distributions in number of responses produced across contests. The proportional distribution with feedback produced the largest number of competitive responses, and the 100%/0% distribution without feedback produced the smallest number. Differences among distributions typically emerged only during later blocks of contests. Fixed distributions of rewards often produced decelerating rates of responding, with losing competitors ending the contests before they were completed. Response-rate decreases were greatest for pairs in which the 2 subjects differed most in their response rates and proportion of wins. The presence of feedback had a small effect, increasing responding for some pairs in the 100%/0% distribution. Performance patterns were interpreted in terms of the consequences arranged for the individual participants by the reward distributions and differences in performance between competitors. 相似文献
587.
Baum WM 《Journal of the experimental analysis of behavior》1992,57(3):365-375
Finding a theoretically sound feedback function for variable-interval schedules remains an important unsolved problem. It is important because interval schedules model a significant feature of the world: the dependence of reinforcement on factors beyond the organism's control. The problem remains unsolved because no feedback function yet proposed satisfies all the theoretical and empirical requirements. Previous suggestions that succeed in fitting data fail theoretically because they violate a newly recognized theoretical requirement: The slope of the function must approach or equal 1.0 at the origin. A function is presented that satisfies all requirements but lacks any theoretical justification. This function and two suggested by Prelec and Herrnstein (1978) and Nevin and Baum (1980) are evaluated against several sets of data. All three fitted the data well. The success of the two theoretically incorrect functions raises an empirical puzzle: Low rates of reinforcement are coupled with response rates that seem anomalously high. It remains to be discovered what this reflects about the temporal patterning of operant behavior at low reinforcement rates. A theoretically and empirically correct function derived from basic assumptions about operant behavior also remains to be discovered. 相似文献
588.
589.
Patricia M. Barbetta Timothy E. Heron William L. Heward 《Journal of applied behavior analysis》1993,26(1):111-119
We used an alternating treatments design to compare the effects of active student response error correction and no-response error correction during sight word instruction. Six students with developmental disabilities were provided one-to-one daily sight word instruction on eight sets of 20 unknown words. Each set of 20 words was divided randomly into two equal groups. Student errors during instruction on one group of words were immediately followed by the teacher modeling the word and the student repeating it (active student response instruction). Errors on the other group of words were immediately followed by the teacher modeling the word while the student attended to the word card (no-response instruction). For all 6 students, the active student response error-correction procedure resulted in more words read correctly during instruction, same-day tests, next-day tests, 2-week maintenance tests, and generality tests (words read in sentences). 相似文献
590.
Performances on ratio and interval schedules of reinforcement: Data and theory 总被引:7,自引:7,他引:0
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Baum WM 《Journal of the experimental analysis of behavior》1993,59(2):245-264
Two differences between ratio and interval performance are well known: (a) Higher rates occur on ratio schedules, and (b) ratio schedules are unable to maintain responding at low rates of reinforcement (ratio “strain”). A third phenomenon, a downturn in response rate at the highest rates of reinforcement, is well documented for ratio schedules and is predicted for interval schedules. Pigeons were exposed to multiple variable-ratio variable-interval schedules in which the intervals generated in the variable-ratio component were programmed in the variable-interval component, thereby “yoking” or approximately matching reinforcement in the two components. The full range of ratio performances was studied, from strained to continuous reinforcement. In addition to the expected phenomena, a new phenomenon was observed: an upturn in variable-interval response rate in the midrange of rates of reinforcement that brought response rates on the two schedules to equality before the downturn at the highest rates of reinforcement. When the average response rate was corrected by eliminating pausing after reinforcement, the downturn in response rate vanished, leaving a strictly monotonic performance curve. This apparent functional independence of the postreinforcement pause and the qualitative shift in response implied by the upturn in variable-interval response rate suggest that theoretical accounts will require thinking of behavior as partitioned among at least three categories, and probably four: postreinforcement activity, other unprogrammed activity, ratio-typical operant behavior, and interval-typical operant behavior. 相似文献