Performance of retarded adolescents and nonretarded children on one- and two-bit logical problems

Groups of adolescents of retarded and borderline intelligence, ranging in IQ from 44 to 80 and in mean MA (mental age) from 8 to 12 yr, and groups of nonretarded children ranging in mean MA from 6 to 12 yr, were given logical problem solving tasks. In the nonretarded groups, on a one-bit problem only the kindergarten children (mean MA = 6 yr) failed to perform above chance, and were not tested further. On a two-bit problem, only the first graders (mean MA = 7 yr) failed to perform above chance.Conversely, in the low IQ groups, only the borderline group (mean MA = 12 yr) performed reliably above chance on the one-bit problem, and none performed above chance on the two-bit problem. There is a profound deficiency in low IQ individuals on certain tasks requiring logic and foresight, and MA markedly over-estimates their performance relative to the performance of nonretarded individuals.     

Tic-Tac-Toe performance as a function of maturational level of retarded adolescents and nonretarded children

Two groups of retarded adolescents, differing from each other primarily in IQ (and mental age), were compared with two groups of nonretarded children, differing from each other in chronological age (and mental age), on a modified tic-tac-toe game. The mental ages of the retarded and nonretarded groups were approximately the same. It was found that the slope of performance improvement with increasing maturational level was the same for both subject groups, but the performance of the retarded adolescents was approximately 1.5 years behind mental age expectations, as derived from the performance levels of the normal children. These findings support previous suggestions of a major retardate deficit in tasks requiring logical foresight.     

Mentally retarded individuals outperform college graduates in judging the nonconservation of space and perimeter

Most adults of average and superior intelligence incorrectly assume that in a two dimensional figure two attributes, area, and perimeter, are locked in a fixed relationship such that if one remains unchanged so does the other. Consequently, when they correctly conserve one attribute during shape transformation, they incorrectly conserve the other. Mentally retarded individuals assume no such fixed relationship but depend exclusively on perceptual information. Although this dependence adversely effects their judgment of conservation, it allows them to correctly judge the changed state of the nonconserved attribute.     

Tower of Hanoi performance of retarded young adults and nonretarded children as a function of solution length and goal state

Three experiments were conducted with the Tower of Hanoi task to assess problem solving ability in 6-, 7-, 8-, and 10-year-old nonretarded children and mentally retarded young adults of varying maturational ages. In Experiment 1 we gradually reduced the number of moves required for solution until subjects could solve the 3-disk tower-ending problem. Although all groups experienced difficulty with the standard 7-move problem, all but the trainable retarded group readily solved the 6-move problem. The trainable group did not reach a comparable level of success until the 4-move problem. On the 7-move problem the retarded groups performed at the level of nonretarded groups that were maturationally $\text{1}\text{1}\text{2}$ to 3 years younger. An analysis of first moves indicated that subject groups differed in the strategies they used to solve the problems. In Experiment 2, practice effects were ruled out as a source of the superior performance on the 6- than on the 7-move problem. In Experiment 3, 7- and 10-year-old nonretarded children and mentally retarded young adults did not differ on 5-move problems in which configuration of the goal states was varied. A comparison of all 5-move problems judged to have the same depth of search requirements indicated that the tower-ending problems were significantly easier to solve than the partial-tower-ending problems, which in turn were easier than the flat-ending problems. A limited depth of search capacity sets boundaries on the use of sophisticated strategies and, to a large extent, accounts for the retarded groups' maturational lag.     

The nature of curiosity in children

This study examined several behaviors claimed to reflect curiosity in order to determine whether there are one or more types of curiosity. A secondary purpose was to examine the relations between the one or more types of curiosity and sex, social class, intelligence, achievement level, and ratings of personality traits. In two individual sessions 84 American first-grade boys and girls were administered five tasks which measured observation of complex and simple stimuli, preference of complex and simple stimuli, preference for the unknown, structure of meaning, and object exploration. A normalized Varimax factor analysis allowed the extraction of five factors: manipulatory curiosity, perceptual curiosity, conceptual curiosity, curiosity about the complex, and adjustive-reactive curiosity. Only the first factor was related to a demographic variable, sex. The nature of the factors and their theoretical and practical significance are discussed.     

The confluence model: Parameter estimation for six divergent data sets on family factors and intelligence

Theoretical predictions, based on the confluence model, were made for data from six national surveys of intellectual performance. All six surveys relate intellectual performance scores to family configuration variables. Widely divergent patterns of relationships between the major family factors, such as birth order and family size, and intellectual performance scores characterize the six data sets. Nevertheless, the confluence model was capable of accurate prediction in all cases when all three parameters were estimated. Little accuracy was lost using only two parameters. Variations in the estimated parameter values that reflected the variations in patterns of effects could be meaningfully interpreted for their psychological significance.     

A critique of top-down independent levels models of speech production: Evidence from non-plan-internal speech errors

A number of speech errors are examined which are difficult to account for by top-down serial processing models of speech production which hove independent levels of processing. In particular, most of these errors are characterized by the presence of an interfering element which is external to the utterance under current construction. This paper has two main aims: to classify these errors, and to examine the constraints upon them. It is found that phonological similarity between the target and intrusion is a major determinant of error occurrence. The consequences for models of speech production are discussed in a framework consisting of the architecture and control structure of those models. A particular model to account for these data is proposed, consisting of a spreading activation lexical network.     

Evaluation of outcome in school consultation

To further understanding regarding how content of change, degree of change, and initial level of functioning influence consultants' evaluation of consulation outcome, 14 mental health consultants completed a questionnaire. For each of the 18 prepost consultation ratings on the questionnaire (2 context × 3 degrees of change × 3 initial levels = 18), consultants rated the success of consultation and the degree to which they would like to have been the consultant. Analysis of variance results for both dependent measures indicate main effects for degree of change and initial level. Neither main effects for content nor interaction effects are indicated. It appears that consultants perceive consultation as more successful with and prefer working with consultees who improve the most and who function at a higher initial level.     

Persistence of response prevention effects following retraining of escape behavior

This study evaluated the effects of response prevention procedures on the extinction of escape behavior following the reinstatement of shock-escape training prior to the start of extinction. Female hooded rats were assigned to four groups (N = 10) in a factorial design which orthogonally combined response prevention or pseudo-prevention procedures with escape retraining or no retraining procedures. Results showed that prevention reliably impaired shock-escape behavior on early retraining trials; but this effect dissipated completely by the end of retraining. In extinction, prevention reliably facilitated the extinction of escape behavior relative to that of pseudo-prevention controls; but the degree of facilitation was reliably attenuated by retraining procedures. These findings were related to the competing response interpretation of prevention effects.     

II. The comparability of the WISC-R and WAIS among 16-year-old EMR children

Thirty 16-year-old EMR children were administered the WAIS and WISC-R in counterbalance order to determine the comparability of the two assessment instruments. The WAIS was found to yield significantly higher Verbal, Performance, and Full Scale IQ scores. The comparisons of corresponding subtests indicate that all WAIS subtests were significantly higher than the WISC-R except Picture Completion. Correlations between corresponding WAIS and WISC-R IQ scales and subtests, however, were significant. The results suggest differences between the two instruments among children of subnormal intelligence, thus presenting the possibility that a child may be differentially classified based on the selection of the intelligence test.     

Self-observation and behavior change: Applications to academic and adjustment problems through behavioral consultation

Self-observation as a behavior change technique was implemented through behavioral consultation in a public elementary school system. The self-observation procedures were introduced to two subjects with academic problems (assignment completion) and two subjects with behavioral problems (disruptive talk and interruptions, respectively). In each of the four cases, self-observation resulted in improvement in client behavior. Results are discussed within the context of previous methodological issues in the self-observation literature and the relevance of self-observation as a therapeutic tool in school settings.     

The determinants of beliefs in human nature

This study set out to examine which of a range of ‘demographic’ factors best predicted peoples' beliefs in the heredity vs environmental determinants of specific features in human nature. Ss' sex, age, education, class, voting pattern and religion were related to their beliefs in the heredity vs environmental determinants of six human characteristics: physical characteristics, psychological skills, personality, beliefs, psychological problems and physical problems. Both univariate and multivariate analyses demonstrated the close relationship between the independent demographic variables, particularly education and voting pattern, and the dependent belief variables, particularly personality and beliefs. The literature on correlates of political beliefs was examined and related to the findings in this study.     

Reading skill and the minimum distance principle: A comparison of listening and reading comprehension

Experiment I compared the listening and reading comprehension of sentences which follow the Minimum Distance Principle, e.g., John tells Bill to bake the cake, and of those which do not, e.g., John promises Bill to bake the cake. Third, fourth, and fifth graders were tested. Support for Chomsky's Stage analysis of mastery of the Minimum Distance Principle was found for the listening but not for the reading task. Reading skill level was found to be positively correlated with Stage and a significantly better predictor of promise performance than was age or IQ. Experiment II investigated the effect of the composition of the experimental presentation list on performance by comparing comprehension when the list contained only promise or tell sentences with that obtained when the list contained both types of sentences. For half the subjects, performance differed as a function of the list composition: Implications of these findings for the assessment of the development of language competence are discussed.     

Social inhibition as a function of observation and recording of performance

In order to compare the relative effects of observation of performance and recording of information about performance on social facilitation/inhibition, 256 college students solved three concept-attainment problems in an orthogonal design. The variables were (a) number of observers (an additional observer or the experimenter alone), (b) videorecording (yes or no), (c) audiorecording (yes or no), (d) task complexity (four, six, eight, or ten total attributes in the problems). Each of videotaping, filming, and audiotaping resulted in poorer performance than the control condition, with no differences between these three recording conditions. The presence of an additional observer had no effect on performance. Pulse measures indicated that the presence of an additional observer increased arousal, but covariance analysis indicated no association between differences in performance and arousal.     

Jensen's reaction-time investigations of intelligence: A critique

Jensen has reported a series of reaction-time studies which lead him to conclude that various parameters correlate significantly with IQ. Certain of these parameters are especially emphasized because of their theoretical background and the resulting theoretical light they shed upon the nature of intelligence. Two of the lime-lighted parameters are slope of RT across set size and increasing correlations of RT with IQ as set size increases. I review these studies in detail. I conclude that Jensen's claims are unwarranted. There are many difficulties in his approach that cover the entire gamut from method to data to theory. Some original reseach of my own is reported to illustrate the methodological problems with Jensen's procedure. The data that he alludes to often do not support his claims. The theory that he applies does not fit his paradigm. My conclusion: such research is not easy.     

The emergence of functional play in infants: Evidence for a major cognitive transition

Sixty-four infants, eight boys and eight girls at each of four ages, $\text{9}\text{1}\text{2}\text{, 11}\text{1}\text{2}\text{, 13}\text{1}\text{2}\text{,}\text{and}\text{15}\text{1}\text{2}$ months, were observed during a 15-minute free play session. Three types of play (stereotypical, relational, and functional) and the number of appropriate uses for specific realistic toys were recorded. Stereotypical play (87% of total active play at $\text{9}\text{1}\text{2}$ months) gave way to relational (35% at $\text{13}\text{1}\text{2}$ months) and functional play (52% at $\text{15}\text{1}\text{2}$ months) as the dominant activity. Both functional play and the number of different appropriate uses of toys were rare at $\text{9}\text{1}\text{2}$ months, appeared reliably at $\text{11}\text{1}\text{2}$ months and increased lineraly through $\text{15}\text{1}\text{2}$ months. A change in the quality of play from indiscriminate mouthing, waving, banging, and fingering of objects to the matching of appropriate uses for a large array of toys indicates that the child's manipulations become more object specific and functional over this 6-month age span. Among possible explanations for the linear increase in the frequency and diversity of appropriate toy uses is the suggestion that an important cognitive change occurs toward the end of the first year of life. A case study is presented to illustrate the application of the play procedure for both assessment and treatment.     

The teacher-pupil interaction scale: An empirical method for analyzing the interactive effects of teacher and pupil behavior

The Teacher-Pupil Interaction Scale was developed for use by educational consultants to provide teachers with systematic data for analyzing and improving the learning of pupils. The scoring protocol provides for the simultaneous rating of sequential teacher-pupil interactions; a single mark is used to designate both teacher and pupil behavior at each five-second interval. Observations of a target pupil are alternated with other pupils in the classroom to serve as a point of comparison with the target pupil and to provide a general assessment of the classroom climate. Using the sequential record of their verbal and nonverbal interactions with students, teachers can pinpoint conditions serving both as antecedents and consequents of current student behavior. Armed with this information, teachers can effect changes in their instructional program to increase the rate of desired behaviors and eliminate or reduce unwanted responses.