Decreasing the Proportion of Self-Control Trials During the Acquisition Period Does Not Compromise the Learning Advantages in a Self-Controlled Context     

Jae T. Patterson  Michael Carter  Elizabeth Sanli 《Research quarterly for exercise and sport》2013,84(4):624-633

The present experiment examined the learning effects of participants self-controlling their receipt of knowledge of results (KR) on all or half of their acquisition trials (50%). For participants who were provided 50% self-control, the first half of their acquisition period consisted of receiving KR on all trials, or according to a faded-KR schedule. Participants practiced a sequential timing task. The results showed that independent of practice condition, participants who self-controlled their KR during the acquisition period demonstrated superior performance compared to the respective yoked conditions in the retention and transfer portion of the experiment. These results extend previous research by suggesting that decreasing the proportion of self-control trials does not compromise learning in a self-controlled context.  相似文献   

The Effect of Gradual Self-Control of Task Difficulty and Feedback on Learning Golf Putting     

《Research quarterly for exercise and sport》2012,83(4):429-439

ABSTRACT

Purpose: This study aimed to examine the effect of gradual self-control of task difficulty and feedback on accuracy and movement pattern of the golf putting sport skill. Method: Sixty students were quasi-randomly assigned to four groups under a varying combination of the two factors of task difficulty control (self-controlled or yoked) and feedback control (self-controlled or yoked). The participants in the two groups (dual-factor gradual self-control and self-controlled task difficulty group) that granted control over task difficulty in the acquisition phase were told they could choose any of the pre-set distances from the target. All groups were given 100% feedback in the first half of the acquisition phase, but the participants in the two groups (dual-factor gradual self-control group and self-controlled feedback) that could control their feedback were told that in the second half of the acquisition phase they would be able to ask for feedback when needed. The practice schedule of each member of the dual-factor gradual self-control group was used as a basis to plan the practice of predetermined distances and feedback presentation to the corresponding participants in the yoked conditions. Results: ANOVA with repeated measures showed that the practice method involving gradual self-control of two factors had a positive impact on accuracy and movement pattern of golf putting in the retention and transfer tests compared to other methods (p_s < .05). Conclusion: The advantages of self-control practice presumably come from better adjustment of challenge points by the learner in the course of the practice.  相似文献   

Self-controlled feedback: does it enhance learning because performers get feedback when they need it?     

Chiviacowsky S  Wulf G 《Research quarterly for exercise and sport》2002,73(4):408-415

This paper examines whether self-controlled feedback schedules enhance learning, because they are more tailored to the performers' needs than externally controlled feedback schedules. Participants practiced a sequential timing task. One group of learners (self-control) was provided with feedback whenever they requested it, whereas another group (yoked) had no influence on the feedback schedule. The self-control group showed learning benefits on a delayed transfer test. Questionnaire results revealed that self-control learners asked for feedback primarily after good trials and yoked learners preferred to receive feedback after good trials. Analyses demonstrated that errors were lower on feedback than no-feedback trials for the self-control group but not for the yoked group. Thus, self-control participants appeared to use a strategy for requesting feedback. This might explain learning advantages of self-controlled practice.  相似文献   

Effects of Series Elasticity on the Human Knee Extension Torque-Angle Relationship in Vivo     

Suzete Chiviacowsky  Gabriele Wulf 《Research quarterly for exercise and sport》2013,84(4):408-415

Abstract

This paper examines whether self-controlled feedback schedules enhance learning, because they are more tailored to the performers' needs than externally controlled feedback schedules. Participants practiced a sequential timing task. One group of learners (self-control) was provided with feedback whenever they requested it, whereas another group (yoked) had no influence on the feedback schedule. The self-control group showed learning benefits on a delayed transfer test. Questionnaire results revealed that self-control learners asked for feedback primarily after good trials andyoked learners preferred to receive feedback after good trials. Analyses demonstrated that errors were lower on feedback than no-feedback trials for the self-control group but not for the yoked group. Thus, self-control participants appeared to use a strategy for requesting feedback. This might explain learning advantages of self-controlled practice.  相似文献   

Allowing learners to choose: self-controlled practice schedules for learning multiple movement patterns   总被引：1，自引：0，他引：1  

Wu WF  Magill RA 《Research quarterly for exercise and sport》2011,82(3):449-457

For this study, we investigated the effects of self-controlled practice on learning multiple motor skills. Thirty participants were randomly assigned to self-control or yoked conditions. Participants learned a three-keystroke pattern with three different relative time structures. Those in the self-control group chose one of three relative time structures before each of 90 practice trials; yoked participants were not allowed to choose but were yoked to a self-control participant and followed that individual's sequence of practice trials. Results of the 24-hr serial transfer test revealed the self-control group exhibited significantly lower relative timing error, absolute error, and total error than the yoked group. Findings further support the efficacy of self-controlled learning  相似文献   

Allowing Learners to Choose     

Will F.W. Wu  Richard A. Magill 《Research quarterly for exercise and sport》2013,84(3):449-457

Abstract

For this study, we investigated the effects of self-controlled practice on learning multiple motor skills. Thirty participants were randomly assigned to self-control or yoked conditions. Participants learned a three-keystroke pattern with three different relative time structures. Those in the self-control group chose one of three relative time structures before each of 90 practice trials; yoked participants were not allowed to choose but were yoked to a self-control participant and followed that individual's sequence of practice trials. Results of the 24-hr serial transfer test revealed the self-control group exhibited significantly lower relative timing error, absolute error, and total error than the yoked group. Findings further support the efficacy of self-controlled learning.  相似文献   

The Effect of Knowledge of Results Delay and the Subjective Estimation of Movement Form on the Acquisition and Retention of a Motor Skill     

John Liu  Craig A. Wrisberg 《Research quarterly for exercise and sport》2013,84(2):145-151

Abstract

This study examined the effects of knowledge of results (KR) delay and subjective estimation of movement form on the acquisition and retention of a motor skill. During acquisition, four groups of participants performed 60 trials of a throwing accuracy task under the following conditions: (a) immediate KR, (b) delayed KR, (c) immediate KR + form estimation, and (d) delayed KR + form estimation. Retention tests of throwing accuracy and outcome error estimation in the absence of visual KR were administered 5 min and 24 hours following acquisition. Throwing accuracy was significantly higher during acquisition but significantly lower during retention for immediate-KR participants than for delayed-KR participants. However, participants who estimated their movement form during acquisition produced significantly higher throwing accuracy and lower estimation error during retention than those who did not.  相似文献   

Maximizing Performance Feedback Effectiveness through Videotape Replay and a Self-Controlled Learning Environment     

Christopher M. Janelle  Douglas A. Barba  Shane G. Frehlich  L. Keith Tennant  James H. Cauraugh 《Research quarterly for exercise and sport》2013,84(4):269-279

This study was designed to examine whether participants who could control the schedule of performance feedback (KP) would learn differentially from those who received a rigid feedback schedule while learning a complex task. Participants (N = 48) were randomly assigned to self-controlled KP (SELF), summary KP (SUMMARY), yoked control (YOKE), or knowledge of results only (KR) conditions. Data collection consisted of an acquisition phase and a 4-day retention phase during which right-handed participants performed a left-handed ball throw. Overall, throwing form improved across trial blocks during acquisition, with the SUMMARY, SELF, and YOKE groups showing more improvement than the KR group. During retention, the SELF group retained a higher level of throwing form and accuracy in comparison to the other groups. Results suggest that when given the opportunity to control the feedback environment, learners require relatively less feedback to acquire skills and retain those skills at a level equivalent to or surpassing those who are given more feedback but receive it passively.  相似文献   

Increased cognitive load during acquisition of a continuous task eliminates the learning effects of self-controlled knowledge of results     

《Journal of sports sciences》2012,30(1):94-99

ABSTRACT

Previous research has demonstrated that providing learners with self-control over some aspect of practice enhances motor learning (for a review see Wulf, 2007). One explanation for the self-control effect is that learners engage in deeper information processing when they are allowed to make choices during practice. Recent research has supported this line of thinking by showing that the self-control effect was eliminated for learners who engaged in a cognitive load task during the interval following completion of discrete task trials (Carter & Ste-Marie, 2017). The current study tested the effects of imposing a cognitive load task during the completion of continuous task trials. Participants (N = 48) were divided into self-control (SC), self-control with load (SCL), and two corresponding yoked (YK, YKL) groups. Participants learned a continuous tracing task and then performed 24-hour retention and transfer tests. Retention and transfer test movement times were significantly faster for SC compared to YK participants within the No Load condition but did not differ between these participants within the Load condition. Errors were similar among all groups in retention and transfer. These results provide support for the importance of information processing in regards to the self-controlled learning benefit.  相似文献   

The role of reduced frequency of knowledge of results during constant practice   总被引：2，自引：0，他引：2  

Lai Q  Shea CH 《Research quarterly for exercise and sport》1999,70(1):33-40

Two experiments were conducted to further examine the effects of reduced knowledge of results (KR) frequency on the learning of motor skills during constant practice. In Experiment 1, participants in five KR conditions (100% KR, 50% KR-fade, 50% KR-reverse fade, 50% KR-alternative, and 50% KR-random) practiced a movement timing task. In Experiment 2, participants in two KR conditions (100% KR and 50% KR-fade) practiced a waveform reproduction task. The results of both experiments failed to indicate that reduced KR frequency was more effective in promoting learning than the 100% KR conditions. The present study adds to the increasing number of experiments that do not find a benefit of reduced KR frequency on learning in constant practice.  相似文献   

Summary and frequency of KR presentation effects on retention of a motor skill     

B Sidaway  B Moore  B Schoenfelder-Zohdi 《Research quarterly for exercise and sport》1991,62(1):27-32

This experiment investigates the recent proposal of Schmidt, Young, Swinnen, and Shapiro (1989) that summary knowledge of results (KR) improves skill retention. In Schmidt et al.'s experiment, however, summary length varied concomitantly with the frequency of KR presentation. The current investigation held KR presentation frequency constant while manipulating the number of trials seen in the summary KR display. Subjects were required to perform a timing task on a linear slide. Five groups (n = 12) of subjects participated in acquisition trials then in 10-min and 2-day delayed no-KR retention tests. In 4 conditions, subjects completed each acquisition block without any KR, but following each block they received KR on either 15, 7, 3, or 1 of the 15 trials performed in that block. In the final condition subjects received immediate KR. Analysis of the absolute constant error (magnitude of CE) data for acquisition revealed all groups improved with practice and the immediate KR group performed better than all the summary groups which in turn did not differ significantly. Analysis of the magnitude of CE retention data found performance to be worse on the 2-day retention test for all groups. The effect of condition was significant. The 1/1 group had lower error scores than all other groups, which in turn were not significantly different. Analyses of variable error (VE) revealed only that VE decreased with practice. These findings suggest frequency of KR presentation may be the basis for the summary KR effect found by Schmidt et al. (1989).  相似文献   

Feedback after good trials enhances learning     

Chiviacowsky S  Wulf G 《Research quarterly for exercise and sport》2007,78(2):40-47

Recent studies (Chiviacowsky & Wulf, 2002, 2005) have shown that learners prefer to receive feedback after they believe they had a "good" rather than "poor" trial. The present study followed up on this finding and examined whether learning would benefit if individuals received feedback after good relative to poor trials. Participants practiced a task that required them to throw beanbags at a target with their nondominant arm. Vision was prevented during and after the throws. All participants received knowledge of results (KR) on three trials in each 6-trial block. While one group (KR good) received KR for the three most effective trials in each block, another (KR poor) received feedback for the three least effective trials in each block. There were no group differences in practice. However the KR good group showed learning advantages on a delayed retention test (without KR). These results demonstrated that learning is facilitated if feedback is provided after good rather than poor trials. The findings are interpreted as evidence for a motivational function of feedback.  相似文献   

Feedback After Good Trials Enhances Learning     

Suzete Chiviacowsky  Gabriele Wulf 《Research quarterly for exercise and sport》2013,84(2):40-47

Recent studies (Chiviacowsky & Wulf, 2002, 2005) have shown that learners prefer to receive feedback after they believe they had a “good” rather than “poor”trial. The present study followed up on this finding and examined whether learning would benefit if individuals received feedback after good relative to poor trials. Participants practiced a task that required them to throw beanbags at a target with their nondominant arm. Vision was prevented during and after the throws. All participants received knowledge of results (KR) on three trials in each 6-trial block. While one group (KR good) received KR for the three most effective trials in each block, another (KR poor) received feedback for the three least effective trials in each block. There were no group differences in practice. However, the KR good group showed learning advantages on a delayed retention test (without KR). These results demonstrated that learning is facilitated if feedback is provided after good rather than poor trials. The findings are interpreted as evidence for a motivational function of feedback.  相似文献   

Children and Fitness: A Public Health Perspective,Reaction to the Reactions     

Bruce Simons-Morton  Nancy M. O'hara  Denise Simons-Morton  Guys Parcel 《Research quarterly for exercise and sport》2013,84(2):177-179

The purpose of this experiment was to determine whether a faded knowledge of results (KR) frequency during observation of a model's performance enhanced error detection capabilities. During the observation phase, participants observed a model performing a timing task and received KR about the model's performance on each trial or on one of two trials. Delayed retention and transfer tests were used to assess the observer's ability to detect error in the model's performance and in the participant's performance while physically practicing the task. Results indicated a beneficial effect of a reduced KR frequency for performance stability and the ability to detect errors in both the model and the participant's own performance. The results suggest that aspects of the processing mechanism(s) developed in observational learning and related to KR are probably similar to those developed through physical practice.  相似文献   

Variations in observation frequency in a self-controlled learning environment do not modulate learning of a pirouette en dehors     

Laura St. Germain  Natasha Lelievre  Diane M. Ste-Marie 《Journal of sports sciences》2013,31(18):2106-2113

ABSTRACT

Little is known about the optimal frequency to observe a skilled model, yet this is potentially an important learning variable, and thus was examined in the context of self-controlled learning conditions. Participants chose the schedule in which they interspersed both physical and observational trials of a dance skill. The participants’ choice, however, was governed by an imposed observation frequency (OF) of either 25%, 50%, or 75%. Participants were in one of these OF groups, in addition to another group in which no constraint was put on OF. This last group was predicted to choose an OF of 10%, however, it was determined that they chose a 50% schedule. Consequently, a 10% OF group was added to the experimental protocol. All participants completed a pre-test, followed by an acquisition phase, and then a 24-hr post-test. Physical performance (F(1, 55) = 143.77, p< .001) and cognitive representation (F(1, 55) = 77.68, p< .001) scores both revealed a significant main effect of Test; scores at post-test were higher than those at pre-test. Thus, learning was demonstrated for both measures. No main effect of Group emerged. Consequently, OF varying from 10% to 75%, under self-controlled conditions, were equally beneficial for learning the dance skill.  相似文献   

Self-controlled amount and pacing of practice facilitate learning of a sequential timing task     

Christopher A. Aiken  Phillip G. Post  Michael C. Hout  Jeffrey T. Fairbrother 《Journal of sports sciences》2020,38(4):405-415

ABSTRACT

Allowing learners to control the number of practice trials has been shown to facilitate motor learning (Lessa & Chiviacowsky, 2015; Post et al., 2011; 2014). However, it is uncertain the extent to which prior findings were influenced by the combined effects of allowing participants to control both the pacing- and amount-of-practice. The present study examined the independent effects of self-controlled amount- and pacing-of-practice on learning a sequential timing task. Participants were assigned to a self-controlled-amount-of-practice (SCA), self-controlled-pacing-of-practice (SCP), yoked-amount-of-practice (YKA), or a yoked-pacing-of-practice (YKP) group. Participants completed acquisition, immediate retention/transfer and delayed retention/transfer. During acquisition, SCA controlled the number of acquisition blocks completed with a fixed inter-trial interval while SCP controlled the inter-trial interval with a fixed number of blocks. Yoked groups were matched to a self-control counterpart so the amount (YKA) and pacing (YKP) were equivalent. Self-control groups demonstrated lower absolute constant error during immediate-retention and lower absolute constant error and variable error during delayed retention (p < .05). For intrinsic motivation, SCA scored significantly higher than SCP for the subscale Interest/Enjoyment (p < .05). Findings indicated that self-control, regardless of type, facilitated motor learning. Further work is needed to continue to examine the relationship between controlling the amount and pacing of practice on skill acquisition.  相似文献   

Error detection processes during observational learning     

Badets A  Blandin Y  Wright DL  Shea CH 《Research quarterly for exercise and sport》2006,77(2):177-184

The purpose of this experiment was to determine whether a faded knowledge of results (KR) frequency during observation of a model's performance enhanced error detection capabilities. During the observation phase, participants observed a model performing a timing task and received KR about the model's performance on each trial or on one of two trials. Delayed retention and transfer tests were used to assess the observer's ability to detect error in the model's performance and in the participant's performance while physically practicing the task. Results indicated a beneficial effect of a reduced KR frequency for performance stability and the ability to detect errors in both the model and the participant's own performance. The results suggest that aspects of the processing mechanism(s) developed in observational learning and related to KR are probably similar to those developed through physical practice.  相似文献   

Self-control of task difficulty during training enhances motor learning of a complex coincidence-anticipation task     

Andrieux M  Danna J  Thon B 《Research quarterly for exercise and sport》2012,83(1):27-35

The aim of the present work was to analyze the influence of self-controlled task difficulty on motor learning. Participants had to intercept three targets falling at different velocities by displacing a stylus above a digitizer Task difficulty corresponded to racquet width. Half the participants (self-control condition) could choose the racquet width at the beginning of each trial. Each was paired with a participant from the yoked group. The self-control condition resulted in better performances and accuracy during immediate and delayed retention tests. These results confirm the advantage of a self-control condition on motor learning. They are discussed with reference to the challenge point hypothesis (Guadagnoli & Lee, 2004).  相似文献   

错误结果反馈对追踪任务学习迁移的影响   总被引：1，自引：0，他引：1  

金亚虹  章建成  任杰 《上海体育学院学报》2010,34(2)

采用电脑追踪任务探讨错误结果反馈(KR)对运动技能学习迁移的影响.抽取在校大学生,随机分为正确KR组、错误KR组、混合KR组(组间性别均衡设计).在第1-3 d,3组受试者练习时分别获得正确的KR、错误的KR,或者获得25次正确KR后,再获得25次错误KR.正确的KR是每次追踪误差的毫秒数,错误的KR则是正确KR数值+10 mm.在第4 d,3组受试者分剐在无KR的条件下,用原任务进行保持测试10次,之后再操作两个迁移任务各10次.显示:KR在一致性时机任务和电脑追踪任务中的作用机理类似,当可以获得KR时,学习者将它作为觉察和纠正操作错误的信息源:错误KR会带来迁移测试绩效的偏差.提示:学习者形成自身觉察错误能力是运动技能学习的关键,实践工作者应根据运动情境的特点,合理地提供结果反馈,以促进运动技能的学习.  相似文献   

Post-Knowledge of Results Delay: Effects of Interpolated Activity on Learning and Performance     

Carol Benedetti  Penny Mccullagh 《Research quarterly for exercise and sport》2013,84(4):375-381

Abstract

The present experiment investigated the effects of interpolated processing activity (IPA) during the post knowledge of results (KR) interval. The study attempted to correct some of the problems inherent in previous research by using a ballistic timing criterion task and assessing the effects of interpolated processing activity (IPA) on both acquisition and No KR transfer trials. To insure that the efficacy of the IPA manipulation, a paced task was used and performance was assessed. Two levels of post-KR delay (5 and 10 s) were factorially combined with two levels of IPA (IPA or No IPA) to yield four experimental groups. Each subject completed 30 KR acquisition trials and 20 No KR transfer trials. Interresponse interval was held constant. In contrast to many previous studies, IPA interfered with the subjects' ability to learn and perform the criterion movement time of 150 ms. Both the memory trace and the perceptual trace were similarly affected. The detrimental effects of IPA on absolute error and objective-subjective error differences found during acquisition persisted during KR withdrawal.  相似文献