The peer review process may suppress opposition to mainstream theories, wishing to maintain the status quo within particular scientific fields
Reviewers tend to be especially critical of research that contradicts their own view and much more favourable to that which matches it
Established scientists are the ones more likely to be chosen as reviewers particularly by prestigious journals and publishers
As a result findings that chime with current opinion are more likely to be passed down than new innovative research that challenges the established order
Thus, peer review may have the effect of slowing down the rate of change within a particular scientific discipline