时序信息加工机制及其通道效应的实验研究

研究由两个实验组成,实验一采用纯粹的视听方式,以线段长度和声音频率为材料,对时序信息的加工方式（自动加工与控制加工）、编码特点（时序信息是何时编码的）以及通道效应进行了研究。实验二以汉字为材料重复实验一的过程;结果表明,时序信息的加工存在视听通道效应,其机制源于记忆,且与实验材料的加工深度以及加工方式有关;时序信息既包含有自动加工,又包含有控制加工。视觉刺激倾向于自动加工,而听觉则倾向于控制加工;时序信息是在项目学习时编码获得的,而不是在提取时建构的。     

Ratio size and cocaine concentration effects on oral cocaine-reinforced behavior.

Monkeys were given a choice between cocaine solutions and water under concurrent fixed-ratio reinforcement schedules. The operant response was spout contact. Six rhesus monkeys served as subjects. The cocaine concentration was varied from 0.0125 to 0.8 mg/ml, and the fixed-ratio value was varied from 8 to 128. Cocaine maintained higher response rates than did water over a wide range of conditions. Response rate and number of cocaine deliveries per session were inverted U-shaped functions of concentration. These functions were shifted to the right as the fixed ratio was increased. The number of cocaine deliveries was more persistent as fixed-ratio value was increased when the unit dose was larger rather than smaller. Cocaine consumption was analyzed as a function of unit price (fixed-ratio value divided by cocaine concentration), and unit price accounted for between 77% and 92% of the variance in cocaine consumption for individual monkeys. The current data support the claim that a drug's reinforcing effects increase directly with dose and underscore the need to gather parametric data when examining the effects of experimental manipulations on a drug-reinforced baseline.     

Inter-event differences in action memory

Two experiments examined the effect of verb-noun connectivity on recall of simple action phrases, under motor and nonmotor encoding conditions. Connectivity, measured by associative overlap and rated belongingness, was found to make a difference. High-connectivity pairs are better recalled than low-connectivity pairs. Primacy effects are absent with low-connectivity pairs, but generally present with high-connectivity pairs—irrespective of encoding conditions. Inter-item action phrase differences thus influence the effects studied in action memory research. The results were discussed in terms of strategic and nonstrategic conceptions of memory for actions.     

项目在不同间隔时间呈现过程中的系列位置效应

以中国汉字为材料,考察不同中数比率（０．６,０．８和１．０）时,系列位置曲线不同部分性质的分化,结果说明,系列位置曲线不同部分的性质,是项目间隔时间和其时间变化的中数比率共同作用的结果,发现项目间隔时间变化中数比率所起作用更大,在项目呈现时间相同时,项目隔间的时间长短,决定项目之间的辨别程度,也影响到对项目正确提取的百分数。     

Similar consumption and responding across single and multiple sources of drug

Two experiments were conducted to assess whether total response output and total consumption would be similar when drugs are available from single and multiple sources of reinforcement, as predicted by behavioral economics. In Experiment 1, cigarette-deprived smokers were exposed to a concurrent-chains schedule in which equal fixed-ratio schedules served as the initial links, and different reinforcer magnitudes (i.e., number of cigarette puffs) were arranged across alternatives. After the session, obtained unit price was calculated and imposed in the next session when a different number of puffs was available according to a single fixed-ratio schedule. Thus, the unit price at which cigarette puffs could be earned was yoked within subjects across the single and concurrent-chains schedules. When plotted as a function of unit price, similar consumption and response rates were usually obtained across these schedules. Experiment 2 addressed a weakness of Experiment 1, namely, that responding was allocated exclusively to the larger reinforcer magnitude in concurrent-chains conditions, and therefore this schedule may have functioned as a single schedule. In Experiment 2, subjects were instructed to alternate responding between the two alternative schedules. Instructions produced approximately equal response allocation between the two alternatives. Again, similar consumption and response rates were observed across the single and instructed concurrent-chains schedules. These findings are discussed in the context of direct effects and behavioral economics perspectives of drug self-administration.     

中文双字词的具体性效应研究

通过词汇决定任务来考察中文双字词的具体性效应,并检验双重编码理论和语境有效性模型对具体性效应的预测。实验一在刺激单独呈现的条件下操纵词的频率,结果发现在低频的情况下对抽象词的判断时间显著长于具体词,但是在中频情况下没有显著差异;实验二用低频具体词和低频抽象词做重复启动实验,发现重复启动不能消除具体性效应;实验三为低频具体词和低频抽象词提供句子语境,结果发现在一致性句子语境条件下具体性效应消失。以上实验结果既不完全符合双重编码理论的预测,也不完全符合语境有效性模型的预测。     

整体字形对部件识别的影响

该研究借用 Estes的部件再认范式 ,以真字假字和部件字三种刺激材料探索了合体汉字 (或假字 )整体字形对部件的影响 ,结果发现 :(1 )对左右结构型和上下结构型汉字中的部件识别存在字优效应 ;而假字中 ,这二种结构方式的部件识别存在着假字劣效应。(2 )对左右结构型和上下结构型字刺激中的部件识别存在着部位效应。字形整体对左部件或上部件的影响大于右部件或下部件。     

Is Human Behavior Autocorrelated? An Empirical Analysis

The current review and analysis investigated the presence of serial dependency (or autocorrelation) in single-subject applied behavior-analytic research. While well researched, few studies have controlled for the number of data points that appeared in the time-series and, thus, the negative bias of the r coefficient, and the power to detect true serial dependency effects. Therefore, all baseline graphs that appeared in the Journal of Applied Behavior Analysis (JABA) between 1968 and 1993 that provided more than 30 data points were examined for the presence of serial dependency (N = 103). Results indicated that 12% of the baseline graphs provided a significant lag-1 autocorrelation, and over 83% of them had coefficient values less than or equal to (±.25). The distribution of the lag-1 autocorrelation coefficients had a mean of .10. Subsequent distributions of partial autocorrelations at lags two through seven had smaller means indicating that as the distance between observations increases (i.e., the lag), serial dependency decreased. Although serial dependency did not appear to be a common property of the single-subject behavioral experiments, it is recommended that, whenever statistical analyses are contemplated, its presence should always be examined. Alternatives for coping with the presence of significant levels of serial dependency were discussed in terms of: (a) using alternative statistical procedures (e.g., ARIMA models, randomization tests, the Shewhart quality-control charts); (b) correcting statistics of traditional parametric procedures (e.g., t, F); or (c) using the autocorrelation coefficient as an indicator and estimate of reliable intervention effects.     

The effects of the stimulus-reinforcer correlation in a discrete-trials IRT>t procedure

The correlation between a keylight and food in a discrete-trials, interresponse-time-greater-than 6-sec (IRT>6-sec) procedure was varied by manipulating the rate of response-independent food presentation in the intertrial interval. When the correlation was positive, the rates of pecking in the IRT>6-sec condition were high and food was obtained on only about 5% of the trials. Likewise, responding was maintained at a high rate in yoked birds that received the same presentations of the light and food as the birds in the IRT>6-sec condition. When the rate of reinforcement between trials was equated to or made greater than the rate of reinforcement within trials, the response rate decreased for all birds, and those decreases were considerably larger for the yoked birds. However, the percentage of trials in which reinforced responses occurred under the IRT>6-sec procedure did not increase substantially when the light and food were either uncorrelated or negatively correlated. The percentage of trials in which a reinforcer was obtained increased when the keylight was left on continuously and the discriminative stimulus was not presented on the key. The results show that the stimulus-reinforcer correlation affects responding in the discrete-trials IRT>6-sec procedure, but that the effects of the stimulus-reinforcer correlation vary as a function of whether reinforcement is response-dependent or response-independent. The differences between the effects of response-independent and response-dependent pairings and nonpairings of the light and food are best accounted for in terms of differences in the control of responding by background stimuli.     

模板理论与限制调节理论的比较研究

直接针对专家记忆优势效应的理论主要有两个,模板理论和限制调节理论。模板理论认为,专家记忆优势效应是由于专家将许多模板存储于长时记忆中;而限制调节理论认为,专家记忆优势效应是由于专家能够抽取与目标关联的限制来建构刺激物。文章以中国象棋为实验材料．对两个理论进行了比较,实验结果否定了限制调节理论。