Sport-specific decision-making in a Go/NoGo reaction task: difference among nonathletes and baseball and basketball players

The present study examined whether Go/Nogo reaction time (RT) is a relevant index of the sport expertise relating to sport-specific decision-making. 57 male university students, 20 basketball players, 24 baseball players, and 13 sedentary students as a control group, performed a Simple RT task and Go/NoGo RT task which had baseball specific stimulus-response relations. Participants in baseball and basketball differed further in having high, medium, and low experience in the sports. For comparisons across sports, the basketball and the baseball players had significantly shorter reaction times than the nonathletes in both tasks. In contrast, reaction times varied significantly across experience for the baseball players in the Go/NoGo RT task but not for basketball players. These results suggested that Go/NoGo RT could be used as an index of expertise for sport-specific decision-making, if stimulus-response relation in Go/NoGo RT task has a natural relation for a particular sport-domain.     

Dimensional,similarity, and configurai classification of integral and separable stimuli

Subjects classified sets of two-dimensional stimuli into two or three groups in any way they wished. For integral stimuli, classification was based on numerical balance and the similarity structure. For separable stimuli, classification was based on the dimensional structure and the configurai properties of the stimulus set. These results replicate and extend those of Handel and Imai (1972). In addition, they suggest that no closed set of stimulus concepts is possible.     

Self‐Construal Scales Lack Validity

Self‐construal is thought to mediate and explain the effects of culture on a wide variety of outcome variables. A meta‐analysis of published cross‐cultural self‐construal research is reported in this article, and the results across studies suggests that the evidence for the predicted cultural differences is weak, inconsistent, or nonexistent. The results of 3 priming experiments (N = 121, N = 99, and N = 361) suggest that (a) priming does not account for the inconsistent results observed in the meta‐analysis, (b) that scores on a self‐construal scale appear to be measuring trait‐like constructs that are not sensitive to priming, and (c) that measures of self‐construals lack convergent validity. The results of several measurement studies (N = 121, 223, 230, 323, 214, 206, 126, 204, 148, 141, and 150) were inconsistent with the a priori two‐factor measurement model in every case. Self‐construal scales were found to be radically multidimensional and highly unstable within and across cultures. These results lead us to conclude that catastrophic validity problems exist in research involving the use of self‐construal scales in cross‐cultural research.     

A Multimethod Multitrait Validity Assessment of Self‐Construal in Japan,Korea, and the United States

A large number of previous studies have used self‐construal to predict communication outcomes. Recent evidence, however, suggests that validity problems may exist in self‐construal measurement. The current study conducted a multimethod multitrait (Campbell & Fiske, 1959) validation study of self‐construal measures with data (total N= 578) collected in Korea (N= 200), Japan (N= 212), and the U.S. (N= 166). The data showed that the Singelis (1994) Self‐Construal Scale, the Cross, Bacon, and Morris (2000) Relational Interdependent Self‐Construal Scale (RISC), and the Kuhn and McPartland (1954) Twenty Statements Test (TST) lacked convergent and discriminant validity, both pan‐culturally and within each of the three countries included in the study. Scores on the TST were not significantly related to scores on the self‐construal scales, and the various self‐construal measures correlated more highly with measures of communication directness than with alternative measures of the same type of self‐construal. Substantial method effects were also observed. The results were tested for both 2‐ and 3‐dimensional models of self‐construal and for refined scales and scales with all items retained. The results of all analyses were inconsistent with the claim that self‐construal measures are construct valid.