Baseline probability that individual i is willing to settle for his/her partner j, contingent on how much the share of the household income that j would contribute deviates from .5 (sj ? .5) at different levels of ?
Even though our artificial individuals are aversive of accepting somebody who makes less than they do as partner, this aversion decreases when they fail to find a better alternative who is also willing to accept them as a partner. We implement this by weighting \(P_\) by the number of time steps that the focal individual i has been looking for a better alternative without success at the beginning of time step t (ci,t):
Before this happens, j could possibly get consistently meet contrary-sex professionals, which may lead j to-break up with i, if j encounters someone who brings in more i in fact it is in addition to willing to time j
Equation (2) holds that individual i becomes increasingly willing to settle for their current partner, the longer he/she has been searching for an alternative already (i.e., the larger ci,t becomes).