Is actual similarity necessary for attraction? A meta-analysis of actual and perceived similarity

@article{Montoya2008IsAS,
  title={Is actual similarity necessary for attraction? A meta-analysis of actual and perceived similarity},
  author={R. Matthew Montoya and Robert S. Horton and Jeffrey L. Kirchner},
  journal={Journal of Social and Personal Relationships},
  year={2008},
  volume={25},
  pages={889 - 922}
}
To evaluate the impact of actual and perceived similarity on interpersonal attraction, we meta-analyzed 460 effect sizes from 313 laboratory and field investigations. Results indicated that the associations between interpersonal attraction and both actual similarity (r = .47) and perceived similarity (r = .39) were significant and large. The data also indicate that (i) actual similarity was important in no-interaction and short-interaction studies, (ii) there was a significant reduction in the… 

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