Reliability of multiple classifications

Cohen's kappa index is reformulated for multiple classifications based on exchangeable random variables. It is found that kappa is between 0 and 1 inclusive. Two characterizations for kappa are stated in terms of the relationship between such random variables. Within the normal test score model, kappa increases with test reliability and test length. Furthermore, when based on binary classifications, kappa is an inverse U-shaped function of the cutoff score. These trends also hold for the beta-binomial test score model.Paper read at the Spring meeting of the Psychometric Society, Bell Laboratories (Murray Hill, New Jersey), March 1976.The editorial assistance and helpful comments of Leonard S. Feldt, Sarah P. Seaman-Huynh, and the three referees are gratefully acknowledged.     

Two simple classes of mastery scores based on the beta-binomial model

Two simple classes of mastery scores which are suitable for hand calculations are presented for beta-binomial test score distributions combined with linear and cubic referral success. The models provide a simple way to explore the consequences of selecting an arbitrary mastery score. Such assessment would be useful whenever the test user is not willing to posta priori a loss ratio, but wishes to look at the various consequences before aiming at a particular score.     

The influence of sex versus sex-related traits on long-term memory for gist and detail from an emotional story

Recent findings demonstrate sex-related differences in the neurobiological mechanisms by which emotional arousal influences memory, and raise questions about the extent to which memory for emotional events may differ between males and females. Here we examine whether sex-related differences exist in the recall of central (gist) information and peripheral detail from an emotional story. Healthy subjects viewed a brief, narrated slide-show containing emotional elements in its middle section. One week later, they received an incidental multiple-choice recognition test for the story. Following the test, each subject completed the BEM Sex-Role Inventory, an assessment of sex-related masculine and feminine traits. The results reveal no differences in recall of either central or peripheral story information when considering the performance of actual men and women, but a significant difference when considering male and females as determined by their BEM test scores. "BEM" males (subjects with net male BEM scores) showed significantly enhanced recall of central emotional information. "BEM" females did not. Both groups showed significantly enhanced recall of peripheral emotional information, although this effect appeared larger in BEM females than in BEM males. The influences of "BEM" sex and type of information (central, peripheral) significantly interacted to influence emotional memory performance. These findings confirm the existence of sex-related influences in the recall of emotional information, and suggest that sex-related traits, rather than actual sex per se, may be a more sensitive indicator of these influences.     

From Spontaneous to Planned Urban Development and Quality of Life: the Case of Ho Chi Minh City

This paper studies the quality of life (QOL) that residents perceive in typical urban patterns in Ho Chi Minh City. Its major focus is to examine the improvement in the QOL through public intervention into the urban development process. There are four findings. First, moderate government intervention to correct market failures in areas where spontaneous urban development has occurred generates similar levels of satisfaction to areas with planned development. Second, urban planning is important as housing values and subjective satisfactions in planned areas are higher than those in spontaneous development areas. Third, redevelopment negatively affects the QOL in areas undergoing redevelopment. Finally, the contrast between the housing value and the subjective life satisfaction in spontaneous development areas undergoing redevelopment shows the problem of relying on the revealed preference assumption in traditional economics and the need for having alternative approaches.     

Dimensions of acculturation: associations with health risk behaviors among college students from immigrant families

In the present study, we examined a bidimensional model of acculturation (which includes both heritage and U.S. practices, values, and identifications) in relation to hazardous alcohol use, illicit drug use, unsafe sexual behavior, and impaired driving. A sample of 3,251 first- and second-generation immigrant students from 30 U.S. colleges and universities completed measures of behavioral acculturation; cultural values (individualism, collectivism, and self-construal); ethnic and U.S. identity; and patterns of alcohol and drug use, engagement in potentially unsafe sexual activities, and driving while (or riding with a driver who was) intoxicated. Results indicate that heritage practices and collectivist values were generally protective against health risk behaviors, with collectivist values most strongly and consistently protective. Nonetheless, heritage identifications were positively associated with sexual risk taking for Hispanics. U.S. practices, values, and identifications were not consistently related to risk behavior participation. Results are discussed in terms of bidimensional approaches to acculturation, the immigrant paradox, and implications for counseling practice.     

Ethnic socialization and the academic adjustment of adolescents from Mexican, Chinese, and European backgrounds

Ethnic and generation differences in the frequency and types of ethnic socialization messages that 524 eleventh-grade adolescents from Mexican, Chinese, and European backgrounds received from their parents were examined. Results indicated that adolescents from both Mexican and Chinese backgrounds reported more cultural socialization and preparation for bias messages than their peers from European backgrounds. Chinese adolescents reported more promotion of mistrust messages than their peers with European backgrounds. Moreover, promotion of mistrust messages negatively predicted academic achievement, whereas positive cultural socialization messages accounted for the higher levels of motivation among adolescents from Chinese and Mexican backgrounds as compared with their equally achieving peers from European backgrounds.     

Statistical consideration of mastery scores

The kind of mastery score problem often encountered in educational and psychological testing may be roughly described as follows: given that a certain unit of instruction must be mastered by a subject, a test is administered at the end of this unit and, on the basis of the observed score or an estimate of the true score, a decision is made about the grant of the mastery status. If the subject is declared master of the unit, he will be allowed to proceed to the next unit of instruction. Otherwise, remedial work will be given. Given relevant consequences of misclassification, the problem is to determine an optimum decision rule.Part of this work was completed while the author was Visiting Researcher at the Learning Research and Development Center, University of Pittsburgh, in the summer of 1973. Gratitude is extended to Robert Glaser for the invitation and to Anthony Nitko for helpful comments and suggestions.     

Statistical inference for false positive and false negative error rates in mastery testing

This paper describes an asymptotic inferential procedure for the estimates of the false positive and false negative error rates. Formulas and tables are described for the computations of the standard errors. A simulation study indicates that the asymptotic standard errors may be used even with samples of 25 cases as long as the Kuder-Richardson Formula 21 reliability is reasonably large. Otherwise, a large sample would be required.This work was performed pursuant to Grant No NIE-G-78-0087 with the National Institute of Education, Department of Health, Education and Welfare, Huynh Huynh, Principal Investigator. Points of view or opinions stated do not necessarily reflect NIE position or policy and no official endorsement should be inferred. The editorial assistance of Joseph C. Saunders is gratefully acknowledged.     

“Celebrities to lean on!” Perceived celebrity support across two cultures—Iran and the United States

Though many people loathe celebrities and their lifestyles, celebrities can also be perceived as being available to provide community support. The purpose of this study was to establish the psychometric properties of the Perceived Celebrity Support Inventory. The scale was developed to capture three aspects of perceived celebrity support to the community: instrumental (i.e., providing tangible and concrete assistance), informational (i.e., advice, explanation, and information), and emotional (i.e., empathizing, encouraging, listening, and comforting) support. Factor and item analyses have revealed robust psychometric properties in samples drawn from the United States (US) and Iran. The US sample perceived higher community support from celebrities than the Iranian sample. In the Iranian sample, perceived celebrity support for the community was associated with more positive attitudes and less hatred of celebrity culture. In the US, perceived celebrity support was associated with negative attitudes and elevated hatred towards celebrities. The findings advance the literature by providing an instrument with which to measure positive aspects of celebrity influence across cultures.