the first level of filtering, broad sweep of variables such as geographical location, workplace, hobbies, lifestyle, habit, all of which determine who an individual is likely to come into contact with as part of their everyday life
Festinger et al. (1950)
found students who lived in adjoining rooms or the same corridor formed closer friendships with each other than with students who lived on a different block, thus proximity is key when it comes to the first stage of filtering
Daily habits such as going to the gym and taking your dog for a walk every day can lead to encounters with potential partners
Level of education, religious and political belief contribute to this first level of filtering as involve meeting like minded people which can be important for establishing a relationship in the first place