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1.
We trained 7 pigeons to discriminate visual displays of 16same items from displays of 16different items. The specific stimulus features of the items and the relations among the items could serve as discriminative stimuli. Unlike in most studies of same-different discrimination behavior, we gave a small number of probe tests during each session of acquisition to measure the time-course of control by the learning of specific stimulus features and relational cues. Both the specific stimulus features and relational cues exerted reliable stimulus control, with the specific stimulus features exerting more control during the final three fourths of same-different learning. These findings replicate research suggesting that pigeons encode both the specific stimulus features and relational cues, and for the first time document the time-course of control by each kind of cue.  相似文献   

2.
Rats were given tone-footshock pairings with a 0-, 10-, or 30-sec trace interval between tone offset and shock onset. Half the rats within each trace interval were tested for their conditioned fear of the tone through a lick suppression procedure; the remaining rats were evaluated for their fear of the background or contextual cues through their avoidance of the compartment in which conditioning had occurred. Less conditioning was observed to the tone with increasing trace intervals. However, conditioned fear of the context increased with increases in the trace duration. The ability of the more predictive stimulus, the tone, to overshadow the contextual cues was determined by the tone’s temporal contiguity with the footshock. The need to incorporate temporal parameters within current theories of conditioning is discussed.  相似文献   

3.
When approaching achievement tasks, people can focus on different types of goals, for example, task mastery (task orientation) and/or demonstrating one's superior ability (ego orientation). We investigated the extent to which dispositional task and ego orientations towards a personally valued activity predict anticipated affective reactions to a hypothetical situation involving the activity. College students were asked to think of a career-related activity or a competitive sport that was personally important to them. Half of the students were further told that the activity should be one that they enjoyed for its own sake, and the other half were told that the activity should be one at which they wanted to be outstanding. In the hypothetical situation, students imagined that they succeeded at the activity with much effort, but others succeeded with less effort. Task orientation predicted anticipated positive affect in the outstanding performance context, but was not significant in the enjoyment context. Ego orientation predicted anticipated negative affect in the enjoyment context, but was not significant in the outstanding performance context. The ego orientation effects only held for students with low perceived ability. Women scored higher than men on task orientation and anticipated more positive affect. Differences in the task value of competitive sports and career-related activities were also explored.  相似文献   

4.
Prior research on learning from instruction has used a three-stage model of effects. The model posits that (1) an instructional stimulus cues the learner to use particular cognitive processes to operate on content, (2) these operations are executed, and (3) the result facilitates learning. While theories focus on all three stages, experiments have provided only indirect evidence about how well each is accomplished and rarely have controlled directly all three key sources of variance. An illustrative analysis of learning from instruction is presented, and a procedure is proposed that probabilistically increases control over the theoretically significant cognitive causes of instructional effects.  相似文献   

5.
This article seeks to explore the importance of the affective politics of fear in education and to discuss the implications for educational policy, theory and practice. The aim is to explore how discourses of fear work in some educational contexts and draw significant boundaries between ‘us’ and ‘them’ through the structuring of curriculum and pedagogy. This analysis is done through argumentation and research evidence from the author's ethnographic work in the United States and Cyprus. Based on this analysis, the author draws out pedagogical openings that emerge from such efforts, and extends the space in which pedagogues might move to induce a critical interrogation of the affective politics of fear. It is argued that if educators are committed to inspire individual and social change – a change that would eventually problematise the symbolic violence exerted by the affective politics of fear – then much work needs to be done at the affective level.  相似文献   

6.
The effects of age on the forgetting of stimulus attributes in a differential fear-conditioning paradigm were examined with 18- and 70-day-old rats tested in either the original conditions or shifted stimulating conditions at one of three retention intervals (1, 48, and 120 h). Adults displayed significant shifts at each retention interval, with those tested in the original context displaying greater fear than those tested in the shifted conditions. By contrast, by 48 h the 18-day-olds had forgotten the specific attributes of the training situation and began treating the two stimulating conditions as functionally equivalent (Experiment 1). In Experiment 2, we tracked the ontogenetic emergence of adult-like memory for stimulus attributes and found a dramatic increase in memory capability by 25 days of age. Experiment 3 illustrated that the forgotten memory attributes of infants may be retrieved by administering a 90-sec cuing treatment 10 min prior to the 48-h test. Implications for the phenomenon of infantile amnesia are discussed.  相似文献   

7.
Prior research on Pavlovian-to-instrumental transfer has shown that when a CS previously associated with shock (AvCS+) is presented contingent upon a choice response to a discriminative stimulus for food reinforcement, it facilitates discrimination learning. Conversely, a response-contingent CS previously associated with the absence of shock (AvCS?) retards discrimination learning. To evaluate whether these findings reflect across-reinforcement blocking and enhancement effects, two experiments investigated the effects of appetitively conditioned stimuli on fear conditioning to a novel stimulus that was serially compounded with the appetitive CS during conditioned-emotional-response (CER) training. Although there were no differential effects of the appetitive CSs in CER acquisition, Experiment 1, using a relatively weak shock US, showed that a CS previously associated with food (ApCS+) retarded CER extinction to the novel stimulus, in evidence of enhanced fear conditioning to that stimulus. In addition, Experiment 2, using a stronger shock US, showed that a CS previously associated with the absence of food (ApCS?) facilitated CER extinction to the novel stimulus, in evidence of weaker fear conditioning to that stimulus. These results parallel traditional blocking effects and indicate not only that an ApCS+ and an ApCS? are functionally similar to AvCSs of opposite sign, but that their functional similarity is mediated by common central emotional states.  相似文献   

8.
Drawing from a domain specificity perspective, we assert that maternal sensitivity to infant distress cues is distinct from maternal sensitivity to non-distress cues. We review evidence from prior research demonstrating that the two constructs have more unshared than shared variance and that sensitivity to infant distress is a unique predictor of infants' early emotional well-being when both types of sensitivity are examined as simultaneous predictors. In addition, we present new evidence to test the hypothesis that maternal sensitivity to infant distress and non-distress have different origins. We draw on data from a subset of mothers and infants who participated in Phase I of the NICHD Study of Early Child Care (Study 1) and from 101 mother-infant dyads who participated in a longitudinal study of the origins of maternal sensitivity (Study 2). In both studies, maternal sensitivity to distress and non-distress were rated when infants were 6 months old. In both studies, socio-demographic risk (i.e., young, unmarried, low income mothers) was a stronger predictor of sensitivity to non-distress than of sensitivity to distress. In Study 2, mothers' emotional and cognitive responses to videotapes of crying infants during the prenatal period predicted maternal sensitivity during tasks designed to elicit infant fear and frustration but were unrelated to maternal sensitivity in a non-arousing free play context. Maternal sensitivity during infancy can be further divided into specific sub-types that have unique origins and unique effects on subsequent child well-being. Methodological, theoretical, and applied implications of such an approach are discussed.  相似文献   

9.
Controversy in the literature exists concerning the relative importance of cognitive characteristics such as general developmental level and specific prior knowledge for science achievement. Thus the relative ability of developmental level and prior knowledge to predict achievement of concepts of evolution and natural selection was assessed by means by three commonly used types of examination items: multiple choice items, a computational item, and an essay item. The effects of students' disembedding ability, mental capacity, and belief in evolution were also assessed. Disembedding ability, prior knowledge, and belief in evolution were found to be significantly related to overall achievement, while developmental level and mental capacity were not. However, developmental level was found to be the best predictor of performance on the computational item while belief in evolution and prior knowledge were found to be the best predictors of performance on the multiple-choice items. Mental capacity was found to be a predictor of performance on the essay item. It is argued that the cognitive variables influence different aspects of science achievement. Implications are discussed.  相似文献   

10.
Three experiments explored the link between reward shifts and latent inhibition (LI). Using consummatory procedures, rewards were either downshifted from 32% to 4% sucrose (Experiments 1–2), or upshifted from 4% to 32% sucrose (Experiment 3). In both cases, appropriate unshifted controls were also included. LI was implemented in terms of fear conditioning involving a single tone-shock pairing after extensive tone-only preexposure. Nonpreexposed controls were also included. Experiment 1 demonstrated a typical LI effect (i.e., disruption of fear conditioning after preexposure to the tone) in animals previously exposed only to 4% sucrose. However, the LI effect was eliminated by preexposure to a 32%-to-4% sucrose devaluation. Experiment 2 replicated this effect when the LI protocol was administered immediately after the reward devaluation event. However, LI was restored when preexposure was administered after a 60-min retention interval. Finally, Experiment 3 showed that a reward upshift did not affect LI. These results point to a significant role of negative emotion related to reward devaluation in the enhancement of stimulus processing despite extensive nonreinforced preexposure experience.  相似文献   

11.
In a factorial design varying (1) the degree of roughness/violence of a play (low, intermediate, and high), (2) several particular plays within this classification, and (3) sex of viewer, the enjoyment of televised plays of professional football was investigated. The plays were taken from a large pool of plays drawn from numerous games and involving numerous teams. In a pretest, a strong differentiation in the selection plays' degree of roughness/violence was secured. At the same time, the plays were matched on several other, potentially contaminating stimulus dimensions. The enjoyment of plays was found to increase with the degree of their apparent roughness/violence. However, this relationship was significant for male viewers only. It was not reliable for females. There were no appreciable sex differences in the enjoyment of plays featuring low and intermediate levels of roughness. Highly violent plays, in contrast, were significantly more enjoyed by males than by females. The findings suggest that, at least for male viewers, a high degree of aggressiveness is a critical ingredient of the enjoyment of watching sports contests.  相似文献   

12.
The results of several recent studies of human associative learning indicate that people will learn more rapidly about cues that have previously been experienced as predictive of events of significance, as compared with cues previously experienced as nonpredictive. Notably, however, these experiments have typically established this prior predictiveness by means of pretraining with multiple, simultaneously presented cues, some of which are more predictive than others. The present experiments instead investigated the influence of prior predictiveness on future learning when this predictiveness was established via pretraining with individual cues, each of which was the best available predictor of the outcome with which it was paired. Results indicate that, following this pretraining, human participants again show better learning about previously predictive cues than about previously nonpredictive cues.  相似文献   

13.
This study explored gender differences in the relationship between young people's mathematics attitudes and their perceptions toward virtual manipulatives. Seven hundred eighty junior high school adolescents who participated in the problem-solving activity using virtual manipulatives were selected for examination. The study found the male adolescents' views on motivation and enjoyment of mathematics could explain many aspects of their perceptions toward virtual manipulatives. The female adolescents' views on the importance of mathematics and freedom from fear of mathematics could explain many aspects of their perceptions toward virtual manipulatives. However, motivation, enjoyment, and importance of mathematics were more prominent than freedom from fear of mathematics in predicting male adolescents' perceptions toward virtual manipulatives, and freedom from fear and importance of mathematics were more prominent than enjoyment and motivation of mathematics in predicting female adolescents' perceptions toward virtual manipulatives. Two implications can be drawn from this study. First, teachers could provide males with appealing problem contexts not only to be used to remove the fear of mathematics, but also to be used for enjoyment and as motivation to see the importance of mathematics. Then male students could be encouraged to have more confirmed positive perceptions toward virtual manipulatives when engaging in the activities of computer-based mathematics. Second, teachers could provide females with interesting teaching activities, not only to be used for motivation and the enjoyment of mathematics, but also to be used to remove the fear of mathematics and for experiencing the importance of mathematics. Then female students could have positive perceptions toward virtual manipulatives when technology was integrated into the classroom to enhance learning and to support effective mathematics teaching.  相似文献   

14.
Four experiments used a within-subjects design with rats to study the effects of preexposure on the restoration of fear responses (freezing) to an extinguished conditioned stimulus (CS). In each experiment, rats were preexposed to one CS (A), but not to another (B), and then were exposed to pairings of each of these CSs with an aversive unconditioned stimulus (US). In each experiment, there was less freezing to A than to B across extinction, showing a latent inhibitory effect of preexposure. There was no differential recovery to A and B following either a US reexposure (Experiment 1) or a delay interval (Experiment 2). However, when a delay interval included US reexposure, there was greater recovery to the preexposed CS, A, than to the nonpreexposed CS, B (Experiments 1, 3, and 4). These results suggest that the effects of US reexposure and delay combine to affect recovery from the depressive effects of CS-alone exposure. The results are consistent with the view that US reexposure produces better mediated conditioning of CSs that are strongly associated with the context. The results may additionally reflect an effect of preexposure on the learning produced by extinction.  相似文献   

15.
When differential outcomes follow correct responses to each of two comparison stimuli in matching to sample, relative to the appropriate control condition, higher matching accuracy is typically found, especially when there is a delay between the sample and the comparison stimuli. In two experiments, we examined whether this differential-outcomes effect depends on using outcomes that differ in hedonic value (e.g., food vs. water). In Experiment 1, we found facilitated retention when a blue houselight followed correct responses to one comparison stimulus and a white houselight followed correct responses to the other, prior to nondifferential presentations of food. In Experiment 2, we found facilitated retention again when a blue houselight followed correct responses to one comparison stimulus and a tone followed correct responses to the other, prior to nondifferential presentations of food. The results of both experiments indicate that the differential-outcomes effect does not depend on a difference in hedonic value of the differential outcomes, and they suggest that outcome anticipations consisting of relatively arbitrary but differential stimulus representations can serve as cues for comparison choice.  相似文献   

16.
Although literature about problem based learning (PBL) is not scarce, there is little research on experiences about learning methodologies that combine PBL and the use of simulation tools. This lack of studies is even more notable in the case of engineering courses. The motivation for this study is to show how such a combination of PBL and simulation has been designed in a group work course for engineers and to analyze how the underlying factors of this methodology are related to perceived learning. This exploratory study focuses on how perceived enjoyment, interaction, collaborative learning, perceived satisfaction, and time dedicated to the course affect the learning perceived by the students in an engineer's degree course. The outcomes of this pilot study show that only three of these factors (satisfaction, time dedication, and collaborative learning) affect the students' perceived learning. Despite the high ratings obtained for interaction and perceived enjoyment, no significant relation between these factors and perceived learning was found. The reasons behind these findings are discussed.  相似文献   

17.
Cinematic techniques are used to induce biased interpretations of historical videos. Therefore, awareness of these techniques is necessary when working with videos as historical sources. Two studies investigated the effects of training and cueing on the analysis of propaganda. Whereas training benefitted the identification and interpretation of cinematic techniques in propaganda, cueing cinematic techniques on a category level (e.g., camera angle) resulted in less specific analyses with regard to identifying the techniques and hardly affected the interpretation of the techniques' effects. In contrast, more specific manifestation cues (e.g., low angle shot) resulted in more specific analyses and positively affected giving correct interpretations of the cinematic techniques' effects. Interestingly, the effects of cueing were not just observed for practice clips, which included cues, but transferred to test clips, which did not include cues. Overall, these studies constitute a starting point for investigating the effects of cueing on the analysis of propaganda.  相似文献   

18.
In this study, structural equation modeling is applied to examine the determinants of students' satisfaction and their perceived learning outcomes in the context of university online courses. Independent variables included in the study are course structure, instructor feedback, self‐motivation, learning style, interaction, and instructor facilitation as potential determinants of online learning. A total of 397 valid unduplicated responses from students who have completed at least one online course at a university in the Midwest were used to examine the structural model. The results indicated that all of the antecedent variables significantly affect students' satisfaction. Of the six antecedent variables hypothesized to affect the perceived learning outcomes, only instructor feedback and learning style are significant. The structural model results also reveal that user satisfaction is a significant predictor of learning outcomes. The findings suggest online education can be a superior mode of instruction if it is targeted to learners with specific learning styles (visual and read/write learning styles) and with timely, meaningful instructor feedback of various types.  相似文献   

19.
This research focused on the changes in stimulus control that influence an animal’s ability to master a behavioral skill. We assessed stimulus control by (a) predictive environmental cues (panel lights) and (b) practice cues resulting from the subject’s own behavior, as rats learned to complete a left–right lever-press sequence. Following a demonstration of overshadowing by Reid, Nill, and Getz (Behavioural Processes 84: 511–515, 2010), in which stimulus control by the panel lights overshadowed control by practice cues, four additional experiments replicated and assessed this overshadowing effect. In Experiment 1, we discovered a powerful asymmetry: Rats failed to adapt to a lights → reversed-lights transition, but adapted immediately to a reversed-lights → lights transition. Experiment 2 was designed to measure the interactions between these stimulus conditions and practice cues. In Experiment 3, we measured the effect of these stimulus conditions on acquisition rates. Finally, in Experiment 4 an ABA design was used to assess the effects of prior exposure to condition A on B → A transitions, and we found that prior exposure generally reversed the effects observed in B → A transitions presented first or in isolation. We discuss feature-positive bias and spatial S–R compatibility as potential explanations of the observed insensitivity to cues that should be, at face value, highly predictive of food during the acquisition of a behavioral skill. Perfectly predictive cues in behavior chains do not always guide behavior.  相似文献   

20.
The present study investigated whether fear appeals used prior to a test increased self-reported test anxiety and had a detrimental effect on test scores. Forty primary school pupils were instructed for one week under a low threat condition under which no fear appeals were made and another week under a high threat condition in which fear appeals were made salient. An end-of-week test was given in both conditions. Pupils reported an increase in test anxiety related worrisome thoughts and autonomic reactions under the high threat condition, but not in off-task behaviours. Test scores were lower under the high threat condition, but were not attributable to the increases in test anxiety related thoughts and autonomic reactions. This study adds weight to the argument that fear appeals are a damaging classroom strategy, but the mechanism by which fear appeals are reducing test scores is not yet clear.  相似文献   

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