There is emerging research that shows it may be possible to predict the success of a relationship based on an analysis of conversational speechInvestigations of entrainment during conversations of established couples explored the association between prosodic entrainment and emotional tone using the Couples Therapy Corpus , a dataset of chronicallydistressed married couples receiving therapy 12 , 13 Results demonstrated that level of entrainment could predict positive or negative affect 63 % of time , and that higher levels of speech entrainment were associated with more positive affect . In addition , acoustic features of the partners ' speech could better predict a couple ' s marital outcome than behavioral features . These studies demonstrate that speech entrainment occurs between romantic partners , and that it can be associated with positive interactions . Perhaps in the near future , online dating apps will be able to analyze text , audio , and video interactions and predict whether a match is worth pursuing . There may also be added components , such as comparing genetic profiles , that could add increased pattern matching capabilities .