Conservation level and category clustering.

Conducted 2 experiments with 180 elementary and junior high school students to test the hypothesis that category recall is related to the quantity conservation of mass, weight, and volume. The predicted association between conservation level and category recall was observed. In Exp I conservation level was varied with word lists. Main effects of both these variables on recall and category clustering scores appeared. Systematic developmental trends in clustering for the high- but not for the low-associative word list were revealed in post hoc analyses. In Exp II, the Ss' organizational bases were studied under a procedure in which the Ss were allowed first to study a stimulus word and then to select a syntagmatic, a paradigmatic, a category inclusive, or an unrelated response word as a mediator to help them remember the stimulus word. Analyses performed on response selections and response selections in relation to recall revealed that Ss who conserved volume showed the highest tendency to select category inclusive responses. It is suggested that more mature Ss are more likely both to select and use superordinate information as an encoding device. (16 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Hypotheses and habits in verbal "operant conditioning.'

The traditional explanation of experiments related to conditioning of verbal behavior in terms of operant conditioning, i.e., learning without awareness, was questioned. It was hypothesized that such conditioning to cues given by E might be based on S's awareness of the cue and assumed meaning of such a stimulus. 2 experiments were performed, 1 where plural nouns were reinforced, and a 2nd to test the generalization of this acquired pattern on a word association test. The usual findings re: conditioning of plural nouns was replicated and there seemed to be a carry-over of the set to the word association test. However, some Ss seemed to be aware of the meaning of such a reinforcer as "um-hm." Moreover, response set was also seen to affect conditionability. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The restricting effects of awareness: A paradox and explanation.

Ss were shown tachistoscopically-presented word stimuli to test the distinction between the perceptual processes of registration (what could be called physiological or sensory threshold) and awareness (or the cognitive threshold). The presentation consisted of a stimulus word followed by series of words associated to the stimulus word either in terms of meaning or structural resemblance. Recall of words presented subliminally or supraliminally was facilitated with degree of awareness of actual stimulus word; with greater awareness of the word, associational recall was for words that structurally resembled S word; without awareness, recall was determined by associative meaning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Test-taking sets and the performance of schizophrenics on laboratory tests.

Administered an abbreviated MMPI, a word association test, and a reaction time test under 2 test conditions (neutral and mental illness) to 3 schizophrenic groups-28 acute and 28 chronic Ss from open wards, and 28 chronic Ss from closed wards. Chronic Ss from open wards were the only group to perform differentially on the tests under the 2 conditions, presenting themselves as "healthier" on the MMPI and giving more common responses on the word association test in the mental illness than in the neutral condition. It is concluded that schizophrenic patients likely to be included in research may perform differently on tests given under different conditions. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Impact of group consensus and social support on stimulus meaning: Mediation of conformity by cognitive restructuring.

Three experiments with a total of 163 undergraduates tested the hypothesis that a person reinterprets the meaning of the stimulus object when facing unpopular responses from a unanimous group and that this change in meaning leads to a shift in response toward the group's position. In Exp I, several opinion items were presented, and either Ss observed unpopular responses, supposedly made earlier by a unanimous group (UG) or by a group having 1 dissenter (social support), or they observed no response at all (control). Ss merely gave their interpretation of the meaning of a key word or phrase in each opinion statement—they did not give their own opinions. Results show that UG Ss gave more uncommon meanings to the stimuli than did Ss in the other 2 conditions. Exp II ruled out the possibility that the shift in meaning was due to Ss' adhering to the interpretation they assumed to be held by the majority. In Exp III, Ss were exposed to scores representing the meanings that were produced by the unanimous group and control conditions in Exp I. Results show that after observing the consensually produced meanings for these items, the Ss shifted their own opinions toward the position held by the UG in Exp I. (13 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Dichotic shadowing and selective attention to word meanings in schizophrenia.

The dichotic shadowing technique was employed with 24 newly admitted schizophrenics, 24 neurotic inpatients, and 24 healthy controls to locate sources of schizophrenic attentional deficit. The shadowed stimulus words in the relevant channel were always neutral, whereas the stimulus words in the irrelevant channel varied in each condition. The 4 conditions were (a) no distraction, (b) neutral words, (c) semantically similar words, and (d) affective words. All Ss performed better in the no-distraction condition compared to behavior in the other conditions, and better in the neutral vs the affective condition. Results indicate that decline in shadowing performance under distraction with affective word meaning is not a specific schizophrenic deficit. At the level of information processing studied, evidence was not found for attentional dysfunction in schizophrenia. Speculation on the sources of this discrepancy with other studies is presented, considering S groups tested and experimental control of attention switching. (42 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Forced-choice word associations in schizophrenia.

This study, based on Freudian theory, used a forced-choice word association format to test the hypothesis that regressed schizophrenic Ss would prefer children's to adult's association. 16 schizophrenic, 16 sociopathic, and 16 normal male patients matched for age and education were tested on a 51-item test in which they were forced to choose their associations from among randomly arranged adult preferred, children preferred, and irrelevant alternatives. Using choice of children's responses minus choice of irrelevant response as a measure to control for random error markings, schizophrenic Ss differed significantly from normal Ss as predicted. Normal and sociopathic Ss did not differ. Sociopathic and schizophrenic Ss differed at p     

Schizophrenic and normal response patterns to "aversive" and "neutral" associations in two paired-associate paradigms.

3 groups of Ss (hospitalized psychiatric patients, hospitalized nonpsychiatric patients, and college students) were required to learn 2 classes of paired associates—neutral and aversive by 2 methods of presentation of the material: (a) after the traditional presentation of the stimulus word, S was required to anticipate the correct response; (b) S viewed 2 words in the window and had to select the correct one. The results indicated that in general it was much more difficult to learn the "aversive" words than the neutral ones, and hospital patients as a group had more difficulty than the college Ss. However, sensitivity to group differences was enhanced when S was required to use the 2nd rather than the traditional 1st method. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Number and position of visual stimuli as determinants of reaction time in schizophrenia.

Notes that RT in normal Ss has been shown to be linearly related to stimulus complexity, defined as the log of the number of equally probable stimuli to which a response may be made. Data from an earlier study of 40 short- and long-term paranoid and nonparanoid male schizophrenics and 10 male hospital employees were reanalyzed and compared with P. Venable's (see record 1959-10789-001) study of schizophrenic deficit. Although experimental procedures were dissimilar, both studies found that increased complexity did not result in schizophrenics having steeper regression slopes than normal Ss. Consideration of the position of the critical stimulus, however, clearly indicated that long-term, nonparanoid schizophrenics narrow attention to central cues when confronted by an increase in complexity. (French summary) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Preserved organization of semantic attributes in Alzheimer's disease.

This study investigated whether Alzheimer's disease (AD) disrupts the basic organization of the semantic attributes of concepts. Young and normal older Ss and AD patients were presented with a target concept followed by a stimulus word and were to decide whether the stimulus was related to the target. On those trials where it was, the stimulus was either a high-, medium-, or low-dominance attribute of the target. The higher the normative dominance, the more important the attribute to concept meaning. In all 3 S groups, decision time varied as a function of dominance. The higher the dominance, the faster the decision. Attribute dominance affected the performance of AD patients more than that of normal Ss. These results suggest that AD patients retain their knowledge of the relative importance that the different attributes of a concept have for concept meaning. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Lexical ambiguity and children's word recognition.

Conducted 2 experiments to examine the word recognition processes of 2nd, 4th, and 6th graders. In Exp I, 72 Ss named target words that were primed by words that had more than 1 meaning. Targets were related either to the more or less frequent sense of the ambiguous prime or were unrelated to it. Findings indicate that older Ss were more likely than younger Ss to restrict processing of ambiguous words to the most frequent meaning. While younger Ss showed approximately equal facilitation for words related to either meaning, regardless of each one's relative frequency, 6th graders apparently retrieved only the most frequent meaning. Exp II, with 36 Ss, was similar to Exp I but included neutral primes and varied the interval between presentation of prime and target. Results show that all groups showed automatic retrieval of both meanings of the ambiguous word. For 6th graders, however, this retrieval was followed by a 2nd stage, in which attention was allocated to the more frequent meaning, maintaining it, while the less frequent meaning was inhibited. Overall data indicate that older children use meaning frequency to narrow the amount of information kept active following word recognition. (34 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Tests of a translational model of Stroop interference: Translation or attention?

Examined the hypothesis that Stroop interference would increase in both the position and word tasks when the 2 task were mixed. In Exp 1, 34 Ss reported the position of a word by a manual response or read the word aloud. Results show that substantial interference occurs when Ss must be prepared to respond to either dimension, suggesting that translation is an obligatory process when attention is divided between the 2 dimensions. Exp 2 (40 Ss) showed that this interference is reduced if a cue that indicates the relevant dimension is presented 300 or 1,000 ms prior to the stimulus. Results are discussed in terms of a strength of processing model in which the degree of Stroop interference is attributed to the degree of attention to the irrelevant dimension of the Stroop stimulus. This model assumes that the degree of attention to a stimulus dimension is subject to both top-down and bottom-up influences. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Intrusion of schizophrenics' idiosyncratic associations into their conceptual performance.

Instructed 19 schizophrenic and 7 nonschizophrenic inpatients to give 10 associations which were "names of things" to each of 3 stimulus words which were category names (e.g., fruit). After approximately 2 wk. without medications, Ss performed a concept identification task which involved signaling whether or not names of specific items belonged to a given category. Names to be identified included instances of the category (e.g., apple), similar things (e.g., carrot), and dissimilar things (e.g., football). Also included were idiosyncratic associations given by S to the category word and idiosyncratic associations given by a different S. Schizophrenics produced significantly more idiosyncratic associations than nonschizophrenics on the initial association test. On the conceptual task, schizophrenics significantly more often identified their own idiosyncratic associations to the category names as instances of the category than they did for idiosyncratic associations from another patient. It is suggested that at least some idiosyncratic intrusions in the conceptual performance of schizophrenics consist of preexisting associations, as predicted by response interference theories. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Differences in gradients of stimulus generalization as a function of "Abstract" and "Concrete" attitude.

Goldstein's concept of the loss of abstract attitude in psychopathology, was related to stimulus generalization along a visual-spatial dimension, with an apparatus requiring a voluntary response. Measurement was made of the gradient of stimulus generalization (GSG) of 34 "abstract" Ss, and 34 "concrete" Ss. These Ss were selected on the basis of their performance on 2 abstraction tasks (i.e., the Weigl-Goldstein-Scheerer Color Form Sorting Test, and the Wechsler-Bellevue block design subtest). The hypothesis that "concrete" Ss would have a lower GSG than "abstract" Ss, was tested and supported. The prediction that any differences observed would be independent of diagnostic category, was also substantiated. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The unconscious perception of the meaning of verbal stimuli.

"The hypothesis was investigated that the meaning of a verbal stimulus may be responded to without prior recognition of the stimulus. Four treatment groups were employed of 16 Ss each. The experimental procedure used… consisted essentially of obtaining the S's guesses to a series of verbal stimuli, dichotomized in affective connotation, which were presented at or slightly below the S's previously determined absolute threshold… . there was no evidence that the Ss could make better than chance matches… . It was concluded that no evidence was obtained that Ss respond to the meaning of verbal stimuli prior to recognition of the stimuli." From Psyc Abstracts 36:02:2HL32F. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A prediction of patterns of schizophrenic error resulting from semantic generalization.

Conducted a study with 2 groups of 26 male schizophrenics and normal psychiatric aides (mean age = 45 yr) to test predictions derived from a theory of disordered thought by L. J. Chapman, J. P. Chapman, and G. A. Miller (see PA, Vol. 39:10059) concerning the conditions under which schizophrenic Ss exhibit excessive generalization errors. The theory assumes that both the schizophrenic and normal are biased toward responding to words in terms of the words' strongest aspects of meaning, but that schizophrenics are more strongly biased toward this than are normals. Ss were instructed to indicate by pressing buttons marked "yes" and "no" whether or not test words presented in serial fashion on a memory drum had appeared on a previous training list. "Yes" responses to test words not appearing on a previous training list were the measures of generalization errors. The predictions were supported by the finding that schizophrenics made significantly more errors to words on the test list that shared strong meaning responses (p     

Effect of irrelevant information on the time to enter and retrieve relevant information in a Stroop-type task.

In 4 experiments, Ss pressed a key labeled same or different to indicate whether a probe (color word or color patch) corresponded to the relevant dimension (ink color or meaning) of a Stroop word (Red or Green printed in red or green ink). The probe preceded the Stroop word on some trials and followed it on others. Thus, some trials required matching the probe to the Stroop stimulus per se while others involved matching the probe to a stored representation of the Stroop stimulus. Results indicated that the irrelevant attribute of the Stroop word had a greater effect on retrieval of relevant information than on its initial processing. This heightened effect of Stroop interference on retrieval was especially apparent on between-modes matching trials. The reverse Stroop effect was as strong as or stronger than the standard Stroop effect. Results were related to theoretical notions concerning the nature and locus of Stroop interference. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Anxiety and the variability of word associates.

15 Ss who scored high on the Taylor MA scale and 15 Ss who scored low on the MA scale were given a word associate task. The highly anxious Ss tended to have sets of word associates lower in intersubject variability than the nonanxious Ss for stimulus words that elicited sets of word associates that are low in variability. Highly anxious Ss tended to give sets of word associates higher in intersubject variability than nonanxious Ss for stimulus words that elicited sets of word associates that are high in intersubject variability. A 2nd experiment reports data indicating a relationship between inter- and intrasubject variability of word associates. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Shape constancy in schizophrenic patients.

Shape constancy in visual perception of schizophrenic patients was studied. 40 chronic schizophrenic, 40 acute schizophrenic, 40 nonschizophrenic mental patients, and 40 normal controls were used as Ss. Ss matched the shape of a standard object (circle) inclined at an angle. 2 angles of inclination, 30° and 60°, were used. It was found that shape constancy was lower in schizophrenic patients than in controls when the stimulus object was inclined 60° from the horizontal plane. When the angle of inclination was 30° there was no difference between the groups. The chronic schizophrenic patients displayed greater response variability than the other groups. The relation of these findings to the theory of assimilation of percepts to the perceptual schemata in schizophrenic patients was discussed. (23 ref.) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

Behavior modification through covert semantic desensitization.

Matched 12 male and 18 female snake-phobic undergraduates on degrees of behavioral avoidance and subjective fear. Ss were randomly assigned to (a) an experimental group who received a semantic counterconditioning of meaning treatment; or (b) a control group who were pseudodesensitized on a buffer task. Results show that snake-phobic Ss initially rated the word "snake" on the semantic differential scale as significantly negative in evaluative meaning. Ss in the experimental group showed significant alteration in their semantic differential rating of the word snake, significant decrement in their fear of snakes, and significant behavioral approach toward a live gopher snake. Semantic counterconditioning of meaning is interpreted to provide the basis for some desensitization procedures. (PsycINFO Database Record (c) 2010 APA, all rights reserved)