An Evaluation of Spearman's Hypothesis by Manipulating g Saturation

Spearman's Hypothesis holds that the magnitude of mean White–Black differences on cognitive tests covaries with the extent to which a test is saturated with g. This paper evaluates Spearman's Hypothesis by manipulating the g saturation of cognitive composites. Using a sample of 16,384 people from the General Aptitude Test Battery database, we show that one can decrease mean racial differences in a g test by altering the g saturation of the measure. Consistent with Spearman's Hypothesis, the g saturation of a test is positively and strongly related to the magnitude of White–Black mean racial differences in test scores. We demonstrate that the reduction in mean racial differences accomplished by reducing the g saturation in a measure is obtained at the cost of lower validity and increased prediction errors. We recommend that g tests varying in mean racial differences be examined to determine if the Spearman's Hypothesis is a viable explanation for the results.     

Charles Spearman,Cyril Burt,and the origins of factor analysis

Cyril Burt's article on general intelligence published in the British Journal of Psychology in 1909, and to a lesser extent the correspondence of that year between Burt and Charles Spearman about the paper, have recently become one of the many areas of contention in the continuing historical evaluation of Burt and his role in the development of early factor analysis. From a detailed examination of this correspondence, we argue that Spearman's contribution to Burt's paper was both central and crucial, and confirms Spearman's priority as the originator of factor analytic methods, as they were understood at the time.     

Psychometric Properties of the Cultural Intelligence Scale in a Saudi Arabian Context

The purpose of this study was to evaluate the psychometric properties of the cultural intelligence scale (CQS) in a Saudi Arabian context. The CQS was administered to a random sample of 553 undergraduate students at Hail University. Results of a confirmatory factor analysis (CFA) supported the four‐factor structure of the CQS: cognitive, metacognitive, motivational, and behavioral. In addition, the results of a second‐order CFA indicated that these four factors can be further collapsed into one general factor. The CQS showed adequate internal consistency and test–retest reliability as well as convergent and discriminant validity. The results further revealed no significant differences between males and females. In sum, results suggest that the Arabic version of the CQS is a reliable and valid instrument for measuring an individual's intercultural intelligence.     

Validity evidence of Emotional Quotient Inventory: Youth Version (Short) in a sample of Mexican adolescents / Evidencias de validez del Emotional Quotient Inventory: Youth Version (Short) en una muestra de adolescentes mexicanos

The aim of this study was to obtain evidence on the validity of the Emotional Quotient Inventory Youth Version-Short Form (EQ-i:YV-S) with a sample of Mexican adolescent participants. The sample comprised 375 adolescents, 183 males (48.8%), from years seven to 12 (M_age = 14.80, SD = 1.72). Different tests were carried out to provide evidence of the questionnaire’s validity: (1) reliability and internal consistency analyses; (2) exploratory and confirmatory analyses; and (3) correlational and predictive validity analyses through structural equation modelling. The four EQ-i:YV-S subscales (interpersonal, intrapersonal, stress management and adaptability) provided acceptable indexes of reliability. Exploratory factor analysis supported the multidimensionality of the questionnaire. The results of the confirmatory factor analysis showed that the hierarchical model that hypothesized four first-order factors and one second-order factor (social-emotional intelligence) had the best fit for the data. Finally, the positive correlations found between the four specific EQ-i:YV-S subscales, general self-concept and satisfaction with life, supported the convergent validity of the questionnaire; in addition, the questionnaire’s capacity to predict satisfaction with life corroborated its predictive validity. It can therefore be affirmed that the EQ-i:YV-S is a brief questionnaire that is suitable for measuring the emotional intelligence of Mexican adolescents.     

Comparison of black-white differences on the WISC-R and the K-ABC: Spearman's hypothesis

The Kaufman Assessment Battery for Children (K-ABC) and the Wechsler Intelligence Scale for Children-Revise (WISC-R) are compared with respect to the magnitudes of the average white-black differences in standardized scaled scores and in raw scores. The two test batteries were administered to a sample of 172 fourth- and fifth-grade children comprising 86 black-white pairs matched on age, sex, school, and socioeconomic status. The K-ABC and WISC-R are highly correlated, and the general factor, or g, of one battery is virtually identical to the g of the other. The high positive correlation between the size of the white-black difference on the various subtests of both batteries and the subtests' loadings on the g factor bears out Spearman's hypothesis that a test's white-black dicriminability is a direct function of the test's g loading. The lesser white-black discriminability of the K-ABC relative to the WISC-R is attributable to (1) the smaller g loadings of the K-ABC subsets and (2) the presence of other factors, particularly sequential short-term memory which, to some degree, offsets the white-black difference in g.     

Convergence between attention variables and factors of psychometric intelligence in older adults

The purpose of the present study was to examine the hypothesis that individual differences on measures of attention would converge with select factors of psychometric intelligence, especially fluid intelligence and short-term acquisition and retrieval. A sample of 83 elderly adults $\text{(}\text{X}\text{= 71}\text{years}\text{)}$ was administered a battery of 17 psychometric ability tests. Tests were selected to mark four psychometric ability factors (Cattell and Horn's dimensions of fluid and crystallized intelligence, short-term acquisition and retrieval, and perceptual speed). Also, seven tasks representing four aspects of attention—decoding processes, selective attention, attention switching, and concentration—were administered. A confirmatory factor analysis was conducted to examine the relationships among the four psychometric ability factors and 11 variables obtained from the attention tasks. Results were only partially consistent with the hypothesized pattern of convergence. Two attention measures had significant loadings on a fluid-type intelligence factor, and one had a marginally significant loading on a short-term memory factor. In general, the greatest convergence occured between attention variables and the ability factor of Perceptual Speed. Results were discussed with respect to previous research on psychometric abilities and cognitive processes, the theory of fluid-crystallized intelligence, and their implications for understanding intellectual aging.     

Humphreys's attenuated test of Spearman's hypothesis

Humphreys's test of Spearman's hypothesis (viz., that the size of the standardized black-white differences on various psychometric tests is positively related to the tests' loadings on g, the general intelligence factor) is methodologically weak. It is based on comparison of a fairly representative sample of the black population of U.S. school children with a highly selected sample of the white school population, representing the lowest 15 to 20% of whites in socio-economic status (SES). A fair test of the hypothesis requires that the black and white samples should not be selected on any g-correlated variable, such as SES. Selection attenuates and distorts the relationship between tests' g loadings and the magnitude of the standardized mean black-white differences on the tests. Other unorthodox conditions in Humphreys's study, such as performing factor analysis on the test-score means of various arbitrary demographic groups instead of on individual test scores inflates tests' g loadings and biases the test of Spearman's hypothesis by restriction of reliable variance in g loadings. Humphreys's study cannot be considered a proper replication of Jensen's examination of Spearman's hypothesis in 11 different studies comprising 74 different tests, which consistently bears out Spearman's hypothesis.     

The Correlation of General Cognitive Ability and Psychomotor Tracking Tests

A study was conducted to investigate the nexus of cognitive and psychomotor tests as might be used for personnel selection and assessment. These two domains are frequently seen as independent. A multiple aptitude cognitive test battery and a psychomotor test battery were administered to 354 United States Air Force recruits. The average multiple correlation of the cognitive tests and each psychomotor score as a criterion was 0.34, corrected for range restriction. Confirmatory factor analyses disclosed general cognitive and general psychomotor factors, three lower-order psychomotor factors, and two lower-order cognitive factors. The general cognitive factor accounted for 39% of the variance and the general psychomotor factor accounted for 29% of the variance. Residualized, the lower-order factors accounted for between 10% and 3% of the variance. The average g saturations (loadings) of the cognitive and psychomotor tests were 0.82 and 0.34 respectively. An implication for personnel selection is that the incremental validity of psychomotor tracking tests beyond the validity of cognitive tests will be small due to the commonality of measurement. A further implication of findings is the need to study the validity of the general and specific psychomotor factors.     

Análisis factorial confirmatorio de la Escala de habilidades sociales en universitarios chilenos

This paper presents a psychometric study performing a confirmatory factor analysis of Gismero's Social Skills Scale. A background review is conducted on evaluation tools generally used for social skills, and the general characteristics of the scale are presented for the tool studied. A review is also conducted on psychometric properties of this tool. The sample consisted of 1206 college students at the Universidad Católica de Temuco, Chile. Confirmatory factor analysis was conducted using a polychoric correlation matrix, and the structure proposed by Gismero was analyzed. Reliability assessment procedures, such as internal consistency (Ordinal Alpha) and discriminant validity analysis, were also conducted using AF5 factors. The results show good internal reliability of the tool, suitability of the model to the data, and good discriminant validity. In conclusion, the Gismero's Social Skills Scale is considered as a suitable tool for assessing social skills in Chilean university students. A slight modification of the model structure in the second order factor level is proposed.     

Jensen's reaction-time studies: A reply to Longstreth

Longstreth's (1984) critique of Jensen's research on the relationship of IQ to individual differences in visual reaction time (RT), measured in the Hick paradigm, is found to have numerous errors of fact and interpretation, some trivial and some of theoretical importance. Longstreth's narrowly focused and conjectural style of criticism, which peculiarly strains to favor the null hypothesis, unfortunately obscures the essential findings of Jensen's (and others') studies of the RT-IQ relationship. The two main negative verdicts of Longstreth's critique concerning the RT-IQ relationship are refuted by meta-analyses of presently available data. First, not only do individual differences in RT show a significant negative correlation with IQ, but individual differences in the slope of the regression of RT on stimulus set size scaled in bits (i.e., the binary logarithm of the number of potential reaction stimuli) also show a fully significant, albeit low, negative correlation with IQ. Contrary to Longstreth's second negative surmise, meta-analysis also shows that the magnitude of the RT-IQ correlation itself is a linearly increasing (negative) function of stimulus set-size scaled in bits.     

Analyse Préliminaire des Qualités Psychométriques d’une Version Française du Work Design Questionnaire

The Work Design Questionnaire (Morgeson & Humphrey, 2006) assesses numerous work characteristics. The present research was designed to assess the psychometric properties of a French version of this tool (i.e., WDQ-F) through the following analyses: confirmatory factor analysis, reliability, and nomological validity with work satisfaction, engagement and burnout. In Studies 1 and 2, results of confirmatory factor analyses showed that the fit indices for the 21-dimension model were poor and that seven items displayed low factor loadings. In Study 2, results showed that a reduced version of the WDQ-F (71 items) demonstrated better psychometric properties than the 77-item version of the questionnaire. In addition, correlation analyses provided support for the nomological validity of the WDQ-F.     

创造性智力的验证性因素分析

本研究旨在以心理测最的方法构建创造性智力的维度。在理论构想的基础上自编创造性智力测试,以大学生为被试,然后时测试结果进行验证性因素分析。经过修正得到创造性智力结构的二阶四维同质性模型,由此创造性智力的结构可以从四个维度去描述,即假设检验、顿悟思维、创新设计和定势-批判。     

Implications of the Cattell-Horn-Carroll theory on ethnic differences in IQ

The Cattell-Horn-Carroll theory of intelligence and the Spearman-Jensen hypothesis were applied to help interpret mean IQ differences among ethnic groups. The Cattell-Horn-Carroll theory classifies cognitive abilities on three strata, which differ by magnitude of generality including specific, broad, and general abilities. The Spearman-Jensen hypothesis advances the belief that mean IQ differences between African Americans and Euro-Americans occur as a function of the test's g loadings. Although IQ differences between African Americans and Euro-Americans occur, the differences should be larger on tests with higher g loadings and smaller on tests with lower g loadings. The analysis described in this paper may serve as the catalyst to encourage all intelligence test publishers to supply test users with data regarding mean IQ differences among various ethnic groups.     

Intellectual abilities of Japanese children: An assessment of 212–812-year-olds derived from the McCarthy Scales of Children's Abilities

It is proposed that the conflicting evidence on Japanese intelligence has arisen because the Japanese have a distinctive profile of abilities. To investigate this hypothesis, a number of Japanese abilities were calculated from the Japanese standardization of the McCarthy Scales of Children's Abilities and Japanese values were derived for the major factors in the Burt-Vernon hierarchical model of intelligence. It was found that Japanese children do not differ from American children on general intelligence (Spearman's g), score significantly higher on the group perceptual factor and significantly lower on the group verbal factor. Japanese children also display an idiosyncratic pattern at the level of the primary abilities. They are strong on spatial and drawing abilities and weak on verbal comprehension, memory, and word fluency. It is suggested that this distinctive profile of Japanese abilities goes some way towards resolving the conflicting results on Japanese intelligence obtained by different investigators.     

Measuring Cultural Intelligence in the Turkish Context

The present article reports the results of two studies designed to evaluate the psychometric properties of the cultural intelligence (CI) scale in the Turkish context. The proposed four‐factor (cognitive, metacognitive, motivational, and behavioral) structure of CI was confirmed by confirmatory factor analysis. The results supported the discriminant validity of the four‐factor model of the CI scale in relation to the Big Five personality factors and the emotional intelligence factors. Furthermore, CI explained additional variance in intercultural task performance over and above that explained by demographic characteristics and emotional intelligence. With regard to internal consistency and test–retest reliability, the CI scale showed acceptable results and was in concordance with the prior studies. Taken together, these findings suggest that the Turkish version of CI scale is a reliable and valid measure that can be used to measure individual's intercultural capabilities.     

Use of factor mixture modeling to capture Spearman's law of diminishing returns

Spearman's law of diminishing returns (SLODR) posits that at higher levels of general cognitive ability the general factor (g) performs less well in explaining individual differences in cognitive test performance. Research has generally supported SLODR, but previous research has required the a priori division of respondents into separate ability or IQ groups. The present study sought to obviate this limitation through the use of factor mixture modeling to investigate SLODR in the Kaufman Assessment Battery for Children-Second Edition (KABC-II). A second-order confirmatory factor model was modeled as a within-class factor structure. The fit and parameter estimates of several models with varying number of classes and factorial invariance restrictions were compared. Given SLODR, a predictable pattern of findings should emerge when factor mixture modeling is applied. Our results were consistent with these SLODR-based predictions, most notably the g factor variance was less in higher g mean classes. Use of factor mixture modeling was found to provide support for SLODR while improving the model used to investigate SLODR.     

The Flynn effect,group differences,and g loadings

Flynn effect gains are predominantly driven by environmental factors. Might these factors also be responsible for group differences in intelligence? Group differences in intelligence have been clearly shown to strongly correlate with g loadings. The empirical studies on whether the pattern of Flynn effect gains is the same as the pattern of group differences yield conflicting findings. We present new evidence on the topic using a number of datasets from the US and the Netherlands. Score gains and g loadings showed a small negative average correlation. The general picture is now that there is a small, negative correlation between g loadings and Flynn effect gains. It appears that the Flynn effect and group differences have different causes.     

The Construct Validity of Acceptance: A Multitrait-Multimethod Investigation

Despite increasing clinical and empirical attention, the construct validity of acceptance has not been extensively investigated. The present study utilized a multitrait-multimethod design and a correlated trait-correlated method minus one [CT-C(M-1)] confirmatory factor analytic model to assess acceptance's convergent validity across methods and discriminant validity in comparison to cognitive reappraisal and perceived emotional control in a sample of 210 outpatients with anxiety and mood disorders. In addition, the study evaluated acceptance's concurrent validity by investigating the extent to which it was associated with variables of clinical interest over and above the two rival constructs. Results of confirmatory factor analyses supported acceptance's convergent and discriminant validity in comparison to the two neighboring constructs, and thereby provided partial support for its construct validity. However, contrary to prediction, acceptance was not significantly associated with concurrent validation measures. These results are discussed in the context of acceptance's potential therapeutic utility and functional relationships with associated constructs.     

An Analysis of the Dimensionality and Reliability of the Lennox and Wolfe Revised Self-Monitoring Scale

The Lennox and Wolfe (1984) Revised Self-Monitoring Scale (RSMS) was analyzed, using confirmatory factor analysis procedures, to investigate the scale's dimensionality and reliability. The results revealed that the predicted two-factor correlated structure was the best representation of the four models examined. Coefficient alpha estimates of internal consistency and construct reliability estimates also revealed a reasonable pattern of reliability. However, a number of the factor loadings were low, which may account for the low shared variance estimates for the two factors. Additional correlational tests revealed only minimal overlap between the RSMS and the 25-item original (Snyder, 1974) and 18-item revised version of Snyder and Gangestad's (1986) Self-Monitoring Scale (SMS).