? asked in Social SciencePsychology · 9 years ago

PSYCHOLOGY PLZ HELP! Downs and Abwender (2002) found neurological deficits?

Downs and Abwender (2002) found neurological deficits in soccer players who are routinely hit on the head with soccer balls compared to swimmers, who are also athletes but who are not regularly hit in the heads. Is this an example of an experimental or a non-experimental study? Why?

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  • 9 years ago
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    That is a correlational study, and is not considered an experimental design. Experimental designs have random assignment of subjects to groups and can be used to infer causality. Correlational designs do not have random assignment and connot infer causality.

    Although the above study may suggest that soccer players get neurological damage from getting hit in the head with soccer balls, we can't be sure. Perhaps people with neurological damage prefer soccer (seems reasonable if you've ever seen the fans at a European "soccer" match). For the above study to be experimental the researcher would of had to select people from the population and assign them at random to either play soccer or swim, then test for neurological damage.

  • 6 years ago

    This is NOT a correlational study. The researchers looked at the difference between two populations -- soccer players and swimmers. That's your independent variable.

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