Tactile identification of letters: a comparison of deaf and hearing childrens' performances

The letters of the alphabet were tactually presented to 293 deaf and hearing children and adolescents. Ss identified the letters by matching from memory or with visual letters present. Errors decreased significantly with age in both groups, and were significantly influenced by matching method. The deaf/hearing factor was not significant.     

Effects of a coactor's prediction on latencies to predict and indentify stimuli

On each of 300 trials E's confederate (C) verbalized which of two stimuli would occur; then S made a prediction. Following each presentation, S and C pulled a trigger to identify the stimulus. Two latencies were measured: the interval between C's and S's prediction (prediction time), and the interval between stimulus presentation and S's identification response (choice RT). Prediction times were significantly shorter when S's prediction agreed rather than disagreed with C's prediction, when S's preceding prediction was correct rather than incorrect, and when S was female rather than male. Choice RT was influenced by distributions of C's stimulus predictions and C's prediction outcomes in directions supporting an expectancy model.     

Elaboration structure and list length effects on verbal elaboration phenomena

The effects of elaboration structure (Sentence, Semantic paragraph, Syntactic paragraph) and list length (8, 12, 16 pairs) on paired-associate learning were investigated in a 3 × 3 factorial design. Seventy-five educable retardates were tested on acquisition (S-R) and reversal (R-S) tasks. Significant acquisition differences were found in the 8-pair list, where Semantic paragraph Ss performed better than Sentence Ss. In the longer lists, all structures were equally effective in facilitating acquisition (mean first trial correct = 60%), as well as reversal (mean correct = 95%). Sentence form (declarative, imperative, interrogative) was controlled in each elaboration structure. Analyses indicated that significantly fewer acquisition errors were made on pairs presented in declarative and imperative, as opposed to interrogative, elaborations. Tests of recall for the elaborations revealed that Ss in all conditions generally recalled them as declarative sentences. Further observations at 24 pairs confirmed the 12- and 16-pair findings.     

A model of three-choice discrimination learning under complete and incomplete feedback conditions

The Bower and Trabasso model of concept identification was extended to cover problems in which three stimuli were presented simultaneously and S pointed to the one he thought was correct. The E gave complete feedback by indicating the correct stimulus, or incomplete feedback by saying “correct” or “wrong.” The model accurately accounted for the significant difference in total errors between the two feedback conditions by incorporating process assumptions reflecting the logical difference in information content of the two types of feedback. Using a single set of parameter estimates, the model made satisfactory quantitative predictions of several statistics for both feedback conditions. Some deviations from the model's predictions were found in the length of terminal error runs, indicating that Ss were possibly using memory more extensively than posited by the model.     

Memory for prenominal adjectives in ordinary English sentences

Ss have been found to remember the gist of English sentences quite well while having little or no memory for structural features unrelated to the basic meaning. This research examines the representation of meaning in memory using adjective-noun phrases embedded in ordinary sentences. Ss studied a long series of sentences and were later tested for memory of certain of the adjectives in these sentences. Tested with a specially constructed forced-choice recognition procedure, Ss made significantly more recognition errors to distractors from the same predicative class as the correct choice than they did to distractors from different classes. This effect was highly significant when the correct choice was a nonpolar adjective but was not different from chance when a polar was correct. Data from a recall test procedure suggested this difference was due to Ss remembering the denotative or referential meaning of the adjective. The results showed that Ss remember abstract aspects of the predicative meaning of adjectival modification.     

Effects of repeated exposure to sexually violent or nonviolent stimuli on sexual arousal to rape and nonrape depictions

The major purpose of this investigation was to examine the effects of repeated exposure to sexually violent stimuli (SVS) in relatively ‘naturalistic settings’ on sexual arousal to rape and nonrape stimuli. Repeated exposure effects using nonviolent erotica were also examined. Sixty-nine male Ss participated in the study. A preexposure session was conducted in which Ss were exposed to written and pictorial depictions of rape and mutually-consenting intercourse. Based on Ss' penile tumescence to these depictions, they were classified as either Force-oriented, Nonforce-oriented or Unclassifiable. Subsequently, Ss were randomly assigned to sexually violent (SVS), sexually nonviolent (SNVS) or control conditions within each force-orientation group. Those assigned to the SVS condition were then exposed to 10 SVS including feature-length films and written and pictorial depictions over a period of 4 weeks. Ss in the SNVS condition were exposed to 10 similar media presentations depicting sexually nonviolent activities only. Ss in the control condition were not exposed to any stimuli during this 4-week period. Soon after completion of the exposure phase, Ss returned for a postexposure laboratory session in which they were presented with four depictions that were similar in theme to those in the preexposure session. Penile tumescence scores and self-reports of sexual arousal were obtained. Results revealed that, for Force-oriented Ss, those exposed to either SVS or SNVS were less aroused to the rape depictions in the postexposure session than those in the control condition. A similar pattern occurred with the nonrape depictions for these Ss, though it was considerably less pronounced. No evidence of a similar ‘satiation’ pattern was obtained for either Nonforce-oriented or Unclassifiable Ss, with these Ss showing no significant differences among the three exposure conditions. The findings are discussed in the context of cognitions, personality differences, conditioning processes, stimulus parameters and response habituation theories. Social and clinical implications are also discussed.     

Personality and performance on a missing-letter measure of perceptual defence

Fifty-two Ss were required to make complete words from 20 neutral and 20 unpleasant ‘target’ words whose alternate letters had been removed. The four personality scales from the EPQ and the Psychoticism scale from the unpublished PEN inventory were employed as independent variables in repeated-measures analyses of variance in which the dependent variable was the number of neutral or bad target words produced in the missing-letter task. A significant two-way interaction was obtained between PEN Psychoticism and performance on the task, such that Ss scoring low on the personality scale hit significantly more neutral targets than Ss scoring high on the scale. These results did not support previous studies on the relationship between personality and perceptual defence and were interpreted within the framework provided by Mednick, whereby schizophrenia is characterized by a flattening of associative hierarchies.     

Evaluation apprehension and response withholding in solution of anagrams

Sixty male Ss who were classified as high or low scorers on the Sarason Test Anxiety Scale performed a difficult anagrams task either alone, before a passively observing experimenter or in the presence of an experimenter who both observed and evaluated the S's performance. Ss who were high in test anxiety attempted fewer anagrams and had fewer correct solutions in the Evaluated condition than in the Alone condition, but also had a higher proportion of correct solutions out of total attempts. Low test-anxiety Ss did not show variable performance across conditions for any measure. Follow-up studies showed that when Ss were encouraged to attempt partial solutions neither test anxiety nor experimental treatment influenced any of the measures of performance. State anxiety change scores from baseline to post-treatment assessment showed a generally negative correlation between anxiety and number of anagrams attempted. The results indicate that fear of failure engendered by test anxiety and experimenter evaluation caused Ss to withhold responding.     

Evidence for direct visual access to letter identities

Subjects were presented with two letters from the set BCDFGHLNPORTVZ, one in upper case and one in lower case. Subjects were required to decide, as quickly as possible, whether the two letters on each trial were the same (e.g., Bb) or different (e.g., Bd). Because letters were always physically different, subjects presumably must name the letters in order to respond. Reaction times were predicted by the visual similarity of the letters, and not by their phonemic distinctive feature similarity. Consistent with previous work showing that a word's meaning can be assessed directly from visual information, the findings suggest that visual analysis of a capital or small letter can result in knowing the latter name without further linguistic processing. These results were interpreted as an example of automatic detection as described by Schneider and Shiffrin (1977).     

A two-phase model account of aversive classical conditioning performance in humans and rabbits

A two-phase model was applied to classical conditioning performance in man and rabbits. During phase 1, response probability remained constant. During phase 2, response probability generally increased, although one operator was sufficient for a majority of Ss and two operators were required for a minority of Ss. The latter Ss exhibited increases in responding after a CR trial and decreases in responding after a non-CR trial. The pattern of parameters was similar for man and rabbits. In man, increases in UCS intensity resulted in a decrease in the duration of phase 1 and an increase in the limit of the operators for those Ss requiring more than a single operator to describe performance during phase 2. The value of employing a model to describe the data and understand the effects of independent variable manipulation was discussed.     

A developmental study of differences in initial coding and recoding of hypothesis information

Coding and recoding of hypothesis information was studied in children in Grades 3, 5, and 7, and college students. Each S was tested on several two-choice discrimination problems. A problem consisted of two trials, a training trial and a test trial. The information available for coding on the first trial was varied in three series of problems by using pairs of stimuli differing in 3, 4, or 6 dimensions. Recoding after an error was facilitated in half of the problems in each series by allowing the stimuli to persist briefly after response and feedback. The stimuli terminated immediately after response and feedback in the remaining problems. The second trial of a problem, in which the stimuli differed on only one dimension, was used to probe for the information coded or recoded on the first trial. On the average, fewer dimensions were coded per trial by the younger Ss than by the older Ss. Neither the effects of negative feedback nor the effects of stimulus persistence were found to be related to developmental level. It was concluded that a deficiency in young children's ability to code, but not recode, hypothesis information contributes to their less efficient performance in discrimination problems.     

Storage and later recognition of exemplars of concepts

This paper concerns the problem of abstraction: whether when we encounter several exemplars of a concept, we retain only the abstracted concept, only the exemplars, or both. Although many studies concur that both are stored, a recent article argued strongly that only the abstracted concept is stored. The present study, aimed at replication of this recent finding, follows the earlier procedural details but adds appropriate controls and uses simpler material. A set of 24 exemplars of four concepts, in the form of four-tuples of letters and numbers, was presented to Ss who, after presentation, rated a larger set of exemplars for recognition. One group of Ss experienced the conceptual exemplars; control group Ss experienced items that were similar in composition but not exemplars of a concept. Two major results appeared: Unlike the study on which this was based, all Ss were able to distinguish those items that were originally experienced from those that were not. And, the more completely an exemplar fit the concept (the longer the item), the more confident the S was that it had been presented. In contrast, in the control condition, the longer the item, the more confident the S was that it had not been presented earlier. Two models are described to account for these results. One is based on the S's initial storage of the exemplars in a concept-plus-correction format; the other is based on a procedure whereby the S can make recognition judgments without having previously abstracted and retained the concepts.     

Latencies and confidence in n-value concept learning

An experiment was carried out to investigate interrelationships between responsetimes (RTs), inspection times (ITs), confidence ratings and success-error measures in concept learning tasks with 2, 4 and 6 values per dimension. On the basis of multiple hypothesis testing assumptions, ordinal predictions were made for high and low confidence RTs and ITs on error and correct trials. As predicted, high confidence RTs were significantly faster than low confidence RTs and, on correct trials, high confidence ITs were significantly faster than low confidence ITs. On error trials, high confidence ITs were (non-significantly) slower than low confidence ITs. Latency curves after the last error changed around the trial on which Ss first expressed high confidence. The latency and success-error results generally replicated previous studies.     

Improving visual acuity in a myopic child: Assessing compliance and effectiveness

Improvements in visual acuity following vision training were evaluated for an 11$\text{1}\text{2}$-yr-old myopic male. Initial increases in the distance at which the S could discriminate letters were found. However, performance began to deteriorate as training progressed. A negative-reinforcement procedure was employed in order to rule out motivational factors potentially related to this decreased performance. Using a changing criterion within an ABCBC reversal design, the distance at which the S correctly discriminated letters increased by more than $\text{4}\text{1}\text{2}$ times and was clearly related to the reinforcement procedure.     

Interaction of reinforcement conditions and developmental level in a two-choice discrimination task with children

A total of 540 first, fourth, and eighth graders, equally divided by sex, were run on a two-choice discrimination task under one of three reinforcement conditions: reward (R) for correct responses, punishment (P) for incorrect responses, or reward and punishment (RP) for correct and incorrect responses. Half the Ss were tested by a male E; half, by a female E. Across all developmental levels, learning was superior in the P group. Complex interactions involving sex of S and E underline the importance of organismic variables in discrimination learning and in specifying parameters of reinforcer effectiveness.     

Learning strategies as determinants of memory deficiencies

Two tests were made of inferences about how learning strategies affect recall accuracy, and how peculiarities of strategy might account for mentally retardeds' memory deficiencies. Learning strategy was defined as the pattern of pauses generated by S as he paced himself through serial lists of letters. When given freedom to proceed as they wished, normally intelligent Ss paused increasingly the deeper they went into the list. Retarded Ss did not. It was concluded that the normals' active strategies contribute to their high primacy, while the retardeds' lack of distinctive pauses accounts for their low primacy. In the second test, the strategies were reversed. The normals were forced to abandon rehearsal; the retardeds were forced to rehearse. This resulted in greatly enhanced primacy for the retardeds, and greatly decreased primacy for the normals. In addition to showing how spontaneous strategies and forced strategies can directly influence recall accuracy, these findings suggest a reasonably simple means of mitigating short-term memory deficiencies.     

The generality of word-association hierarchies: I. Production and recall of association responses

Ss responded to a stimuluslist in a free word association session (AS) and tried to recall their response to each stimulus in a recall session (RS). There was a significant positive correlation between commonality score (Co) in AS and number of correct reproductions in RS. All Ss tended to gain in Co, but LC (i.e., Ss of low Co in AS) more than HC (i.e., Ss of high Co in AS).     

Quantitative and qualitative aspects of memory for picture stimuli

Children aged approximately 8.5–9.5 years were shown either names (NP), or pictures (PP), of objects, for each of which they located the corresponding likenesses among an array of alternatives. Written recall and identification accuracy were assessed at 5 hr and 3 days after presentation. As predicted, NP produced significantly superior recall to PP. The rate of identification for recalled items among Ss in PP was significantly higher than that for NP. This result was interpreted as supporting the view that the superiority of NP in recall derives from the fact that Ss may rely upon retrieval from either name or image of each item whereas those in PP must depend upon image alone. This interpretation was extended to take two unexpected findings into account: (i) the superior overall identification accuracy engendered by PP, particularly at the longer time interval; (ii) the relatively weak relationship between identification accuracy and recall scores among matching Ss.     

The effects of perceptual pretraining on concept identification and preference

The effects of perceptual pretraining on preferences and concept identification performance in five- and eight-year-old Ss were investigated. The results indicated that perceptual pretraining facilitated performance on a concept identification task with a non-preferred relevant cue for the five-year-olds, but not for the eight-year-olds. However, perceptual pretraining did not affect preference in either age group and Ss were as consistent in their preference responding before and after perceptual pretraining as was a control group that had not received perceptual pretraining. Preferences were highly consistent in both age groups over a one week period. Perceptual pretraining was interpreted to increase the usability of the less preferred dimensions for the younger Ss, and to leave the affective preference response unaltered in both groups.     

A developmental study of pronouncing responses in the discrimination learning of words and pictures

Subjects at three age levels were administered picture pair or word pair discrimination lists. They pronounced or pointed as a method of choice, and they pronounced or pointed at the correct item (or remained silent) during rehearsal. The results indicated that with picture pairs, pronunciation facilitated learning as a method of choice and a type of rehearsal in nursery school Ss. For fifth grade and college Ss, there was no significant difference between pronouncing and pointing as a method of choice. However, spoken rehearsal was superior to control performance for fifth grade Ss. College Ss performed equally well in the control and pronouncing conditions, but pointing during rehearsal produced significantly more errors than pronouncing. Word pairs produced no significant pronunciation effects. These results were discussed within an internalization of speech perspective.