A weakness of evidence into plasticity is that is it is based on small samples, which may be open to bias. Maguire only used 16, right-handed, male participants in her sample, and compared them with 50 right-handed males in the control group. Using such a small sample of only men may cause the issue of beta bias to arise. Beta bias in terms of gender bias in psychological research is the minimising of differences between the sexes, usually as research is only based on one gender, in this case males. This evidence is subjected to beta bias as it assumes that both male and female brain plasticity works in the same way, which leads to androcentrism. This is important as from this evidence, we cannot explain female plasticity and can only infer the same process occurs in both men and women.
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