Language processing in bilinguals

The present study investigated the language processing strategies of three subgroups of adult bilinguals with different histories of language acquisition: infant bilinguals whose bilinguality dated from infancy; childhood bilinguals who became bilingual around 5 years of age; and adolescent bilinguals who had become bilingual at secondary school age only. All were completely balanced bilinguals in French and English at the time of testing. The experimental procedure, a language recognition task, required the subjects to indicate, by pressing a response button, whether each of a series of words, presented monaurally through earphones, was French or English. Concomitantly, left and right hemisphere EEG activity was monitored, with measures taken of latency to N₁, latency to P₂, and N₁-P₂ peak-to-peak amplitudes. Results indicated shorter latencies to N₁ in the left than in the right hemisphere for the infant and childhood bilinguals but shorter latencies in the right hemisphere for the adolescent bilinguals. Overall, the N₁ latency was shorter for the adolescent subgroup than for the two other subgroups. There were no RT differences. The findings appear to reflect strategy differences: The adolescent group seemed to rely more on a right hemisphere-based, possibly more gestalt-like or melodic strategy, while the early bilinguals relied more on a left hemisphere-based, possibly semantic or analytic type of strategy. The results are discussed in terms of previous research on bilingual subtypes and general forms of language processing among bilinguals.     

A note on the "word-order problem" in agrammatism

This brief note has two parts. First, it presents an analysis of the ability of English agrammatic patients to assign the thematic roles of agent, instrument, theme, and locative to noun phrases in active and passive sentences and prepositional phrases. Data regarding this ability have been presented by Schwartz, Saffran, and Marin (Brain and Language, 10, 149-262 (1980) regarding comprehension, and by Saffran, Schwartz, and Marin (Brain and Language, 10, 263-280 (1980) regarding production. These authors claim their data show that English agrammatic aphasics do not map "word order" onto thematic information. However, a very simple set of principles accounts for all their results, including results which are discrepant in their treatment, but requires that English agrammatics assign thematic roles to NPs in part by virtue of the position of an NP in a sentence or a phrase. In the second part of this note, several issues raised by this re-analysis are briefly discussed.     

Differential cerebral involvement in the cognitive functioning of bilinguals

The cognitive processing strategies of two groups of French-English bilinguals were studied by means of an auditory Stroop test designed to evaluate cerebral hemispheric involvement. An “early bilingual” group were bilingual before the age of 5, and a “late bilingual” group were bilingual after the age of 10. Stimuli were words uttered in pitches that were related to word meanings either congruently (as in the word “high” uttered in a high pitch) or incongruently (the word “haute” uttered in a low pitch). In one condition, subjects were to differentiate low from high pitches, disregarding meaning, while in a second condition, they were to disregard pitch and respond to word meanings. Measures of field independence were also taken. Results of data analyses suggest that male early bilinguals—the most field independent subgroup—process meaning efficiently in both cerebral hemispheres, but process pitch better in the right hemisphere. However, male late bilinguals and female bilinguals, both early and late, process meaning more rapidly in the right cerebral hemisphere and pitch equally rapidly in both hemispheres. The findings are interpreted as reflecting hemisphere-based strategy and sex differences in information-processing by the two bilingual groups.     

Covariation and temporal contiguity as principles of causal inference in young children

Four- to seven-year-old children observed a simple physical effect which could be attributed to either a consistent but noncontiguous covariate or a contiguous but inconsistent covariate. When there was a physical rationale for the temporal delay between covariate and effect, children attributed the effect to the consistent but noncontiguous covariate. In the absence of such a rationale, they attributed the effect to the contiguous but inconsistent covariate. It was concluded that neither consistent covariation nor strict temporal contiguity were essential aspects of causal inference for these children.     

Semantic encoding deficits in a case of traumatic amnesia

A 33-year-old patient was studied neuropsychologically 19 years after sustaining severe head trauma. A recent CT scan showed lesions in the left frontal and right temporal regions. Performance on standard memory tests, both verbal and visuospatial, was extremely poor, although other intellectual functioning was relatively spared. The patient showed some interesting deficits in semantic processing. In a depth of processing task there was no advantage for words where semantic encoding had been induced. Neither was there any release from proactive interference after shifts in semantic categories. Deficits were also observed in short-term memory distractor tasks as well as in cueing tasks. These findings suggest that the cognitive deficits commonly observed in Korsakoff's disease can also be present in other amnesic disorders and may in part be related to cortical and especially frontal lobe atrophy.     

Young children's processing of television: Modality differences in the retention of temporal relations

Two experiments were conducted to examine modality differences in pre-schoolers' ability to recognize or recall temporally related events. Results of both experiments demonstrated that temporally related events were remembered more frequently when they were conveyed visually rather than aurally. This modality effect was found both when the semantic content of the auditory and visual sequences was either the same or different, and for shows designed for educational and purely entertainment purposes. The data suggest that children show relatively impoverished integration of the temporal parameters of auditory information, which may contribute to their misunderstandings about the plot of a televison show.     

Hemispheric functions in the processing of agent-patient information.

Left and right hemisphere processing capabilities for pictorial information about agent (performer of an action) and patient (recipient of an action) relations were assessed in a tachistoscopic study. Subjects were presented pictures in either the right or the left visual field depicting an agent-action-patient event. They were asked to locate which side of the drawing contained the agent and, in separate trials, which side contained the patient. Reaction times to locate the agent were significantly faster than to locate the patient, regardless of the field of presentation. The results are discussed in terms of a general nonlinguistic processing constraint that favors agent information. It is suggested that this processing asymmetry may underlie syntactic asymmetries regarding the expression of agents and patients in language.     

Compound conditioning: Elimination of the blocking effect

Prior conditioning employing one element of a compound stimulus as the CS blocked the acquisition of a Conditioned Emotional Response (CER) to the second element of a simultaneous compound stimulus that was subsequently used as the CS in further conditioning trials. Presentation of a brief “surprise” stimulus 3 or 5 sec after the occurrence of the US during the compound trials eliminated the blocking effect.     

The logical and empirical bases of conservation judgements

It is argued that conservation judgements are based on a particular combination of logical necessity and empirical belief. The empirical belief is that a given transformation will not alter a particular quantity (Elkind's conservation of identity). The logical aspect is a transitive deductive argument containing an initial equivalence of two quantities and the conservation of identity belief as premises which lead to the conclusion of maintained equivalence (Elkind's conservation of equivalence). In two experiments, it is shown that conservation of identity beliefs can be manipulated in subjects who have long since developed the capacity for transitive deductive inference. Untrained 10 year olds were unaware of how sublimation acts to alter certain quantities over particular transformations of shape. And untrained adults incorrectly believed that both the area and perimeter of a closed figure would be conserved over transformations which elongated the figure. Both groups of subjects could be trained in the correct conservation of identity beliefs and this affected their conservation of equivalence judgements in predicted ways. It is suggested that the locical aspect of conservation is developmentally stable and that the empirical aspect varies widely across problems and individuals because of its dependence on relevant experience.     

The effects of restraint and noncontingent preshock on subsequent escape learning in the rat

Three experiments investigated the effects of restraint and of inescapable fixed duration preshocks on subsequent shuttlebox escape-from-shock learning. Fixed-intensity preshock, random-intensity preshock, and no-preshock conditions were included in each experiment. In Experiment 1, restraining the rat in a harness prior to escape training retarded escape acquisition. There was no effect of preshock. In Experiment 2, both restraint and high fixed-intensity (1.0 mA) preshock retarded escape acquisition, when escape training occurred either immediately or 24 hr after preshock. In Experiment 3, movement was punished by positively correlating preshock intensity with the rat's movement; this treatment retarded escape conditioning. No effects were found for low fixed-intensity or random-intensity preshock nor for a condition in which movement was rewarded during preshock. The retarding effects of restraint and certain types of preshock were explained in terms of interfering instrumental responses.     

Some implications of temporal drift in social parameters

Social and political factors often have an effect on the way we perceive and think about particular events. While it is generally acknowledged that these factors are likely to change over time, the implications of such temporal changes for empirical research are not often considered. In this paper, some of these are illustrated by examining data collected from a sequence of studies conducted over a 3-year period (1973–1976). Subjects viewed the same videotaped mock (rape) trial and, prior to experimental manipulations, gave their own personal verdict. An examination of the proportion of mock jurors preferring guilty in each of the studies revealed a drift of 16% (.53 to .69) from 1973–1976. This trend toward harsher judgments was observed for both sexes, with females uniformly more likely than males to favor conviction. Ancillary evidence suggests that the upward drift reflected changes in the perception of rape during that period. The implications of temporal drift in parameter values for empirical research were illustrated by simulating jury size effects using social decision scheme theory (J. H. Davis, Psychological Review, 1973,80, 97–125). The results indicate that the magnitude of theoretical differences due to jury size must have decreased as the probability of an individual guilty vote increased over time. Thus, failures to replicate findings may not be due entirely to sampling error, methodological imprecision, or the like, but to temporal changes in the social phenomenon under investigation.     

Development of the concepts of energy conservation and entropy

Development of the concepts of energy conservation and entropy was studied in children between 5 and 15 years of age. Energy conservation, as illustrated by the operation of double and colliding pendulums, was not well understood until about 15 years of age. Understanding of entropy was dependent on the particular apparatus used. When illustrated by the gradual mixing of rolling marbles of different colors, entropy was understood by 9- to 15-year-olds. But when illustrated by the eventual equalization of water levels in two interconnected containers, entropy was not well understood until about 15 years of age. Errors on a problem used to illustrate the conservation concept could often be characterized by the misapplication of the entropy concept and vice versa.     

Transfer of a response controlling stimulus duration across discrimination problems

In the acquisition phase, pigeons learned to peck at a changeover key to shorten the duration of S? but not of S+ presented on the food key in a discrimination problem. In the transfer phase, the significance of S+ and S? was changed through extinction of both, equal reinforcement, or discrimination reversal, while the changeover key was not available. Transfer tests then showed appropriate modification of the changeover response. Similar transfer was demonstrated across orthogonal stimulus dimensions. Further analytic studies showed that this transfer of the changeover response did not depend upon mediation due to differential response rates to the food key. This research strategy enriches the study of the “second learning process” by providing an indicator of stimulus control in all phases of the procedure. Direct transfer between different problems also indicates that discriminative stimuli, although physically dissimilar, have the same “psychological value” for the subject.     

Construct validation of the dependency and self-criticism scales of the depressive experiences questionnaire

S. J. Blatt (Psychoanalytic Study of the Child, 1974, 29, 107–157) distinguished between two types of depressive experiences, one characterized by strong dependency needs and the other by self-criticism and guilt. This paper reports a series of validation studies of the Depressive Experiences Questionnaire (DEQ), which was developed to measure individuals' vulnerabilities to these types of experiences (S. J. Blatt, J. P. D'Afflitti, & D. M. Quinlan, Journal of Abnormal Psychology, 1976, 85, 383–389). The Dependency and Self-Criticism scales were shown to be stable in the face of both a 13-week interval and the receipt of midterm grades. Dependency was associated with conflict concerning the expression of hostility and, in males, feelings of helplessness. Self-Criticism was associated with low self-esteem and high levels of morality-conscience guilt. In a study of behavior in dyadic problem-solving tasks, Dependency in males was found to be negatively related to task leadership, and Self-Criticism in females tended to be negatively related to judged likeability. On the other hand, little support was found for the hypotheses that Dependency would be related to field dependent cognitive style and to the use of primitive defense mechanisms. The results were viewed as supporting the utility of Blatt's distinction between the two types of depression, but a number of anomalous findings indicated a need for further study of the DEQ. The question of the developmental level of the two types of depression, possible sex differences in the correlates of the scales, and the possibility of situational specificity in individuals' responses were identified as the areas most in need of study.     

Generalized imitative affection: Relationship to prior kinds of imitation training

Two experiments utilizing first- and second-grade Canadian children showed that generalized imitative physical affection was most facilitated by prior imitative physical contact training (as opposed to verbal contact training) when the object of the affection was either a toy teddy bear, Experiment I, or an adult human, Experiment II.Additional findings from Experiment I showed that generalized imitative physical aggression was equally facilitated by imitative physical contact training and that punishment, as well as extinction operations applied to training imitations, resulted in suppression of all generalized imitations with no differential effect of punishment on affection or aggression being noted.The lack of any persisting imitations in a control group in Experiment II, which received noncontingent reinforcement but instructional prompting for training imitations, suggested that instructional control of imitation responses was initially weak and that the contingency between reinforcement and training imitations was critical for continued occurrence of training imitations and any occurrence of generalized physical affection imitations.     

A process model for water jug problems

We develop and evaluate a model for the water jug task in which a subject is required to find a sequence of moves (pouring operations) which produce a specified amount of water in each jug. Experiment 1 was designed to evaluate the meansends, move selection heuristics that are assumed by the model. Experiment 2 tested the model's predictions concerning those aspects of the water jug task that determine problem difficulty.A three stage process model incorporating GPS-like, means-ends heuristics and assumptions concerning the utilization of short- and long-term memory was able to account for differences across problems as well as details of the performance of subjects solving a given problem. We conclude that a GPS-like model that only selects one move at a time (no forward planning of move sequences or setting up of subgoals) can provide a good account of solution behavior in the water jug task.     

Auditory temporal discrimination by trained listeners

Previous reports from this laboratory have shown that untrained listeners cannot name the order of sounds in extended sequences of unrelated items such as hisses, tones, and buzzes at item durations of 200 msec, even though identification of order for the sounds of speech and music is accomplished readily at much shorter item durations. The present study indicates that under appropriate conditions subjects can be trained to distinguish between and to identify permuted orders within sequences of nonrelated sounds each lasting only 10 msec or less. Evidence is presented suggesting that much of what passes for direct identification of order is actually based on prior identification of a larger pattern. Two principal mechanisms seem to mediate discrimination of auditory temporal order: (1) fine resolution (requiring prior training) permitting identification of over-all patterns and capable of operating with item durations of only a few msec; (2) coarse resolution (special prior training not required) allowing naming of order of items having minimal durations usually above 200 msec for unfamiliar sequences.     

Relationship with people as the underlying dimension for Roe's classification of occupations

One hundred eleven subjects were asked to indicate how much relationship with people is involved in 48 occupational titles. The results support Roe's (1956) classification of occupations: differences within occupational fields were found to be smaller than differences between occupational fields (F = 8.53, P < .01). The homogeneity of Arts and Entertainment is discussed.