This revolves around the fact that we only meet a very small fraction of people living in our area (proximity filter)
filter 2. similarity of attitudes second filter based on basic values - this is the best predictor of stable relationships.
most of those we meet tend to be of a similar social class, education level and we prefer those with similar attitudes byrne
filter 3. complementarity
based on the degree to which potential partners meet each others needs specifically our emotional needs This helps make relationship less superficial and more harmonious
Kerckhoff and Davis found that attitude similarity was the most important factor up to 18 months but in long term couples complementing each others needs was the more important factor.
