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M Yerlès

Publications and source records attributed to M Yerlès.

2 recordsLinked to original sources

Racial differences in sports performance.

The purpose of this paper is twofold: (a) to present data on racial differences in sport performance and (b) to comment briefly on theories, hypotheses and studies, whether they be biological, psychological or sociological in nature, that have attempted to explain the observed differences. Available data are mainly drawn from studies focusing on American professional sports. The results indicate that Afro-American athletes largely dominate the sport scene in a few sports and across a wide range of performance indicators. Although it is impossible at this time to conclude with satisfaction on the causes of racial differences, sociological explanations seem best to explain the observed performance differentials.

Black People↗

[Analysis of advance visual indices in receiving a tennis serve].

The aim of this study is to analyse the differential visual patterns of expert and non-expert tennis players preparing to return a tennis serve. Two 16 mm films were used for testing purposes; 27 services were delivered and recorded on each film. The subjects had to identify verbally the type of serve delivered. During film viewing, eye movements were recorded by an Eye Mark Recorder NAC V. Results revealed that the expert players seem to use cues from the general position of the body during the ritual phase and cues from the racquet position during the execution phase.

Adult↗