According to the study, the amount one person rewards another and the comparison levels for alternatives become the most important factors in determining liking and satisfaction.
This consideration of alternative relationships was defined and named the comparison level for alternatives by Thibaut and Kelley in 1959 ( Floyd 1994 ) . talk ) 13 : 37, 15 December 2011 ( UTC)
Comparison levels of harm previously demonstrated by David Nutt show that alcohol and tobacco were among the most lethal, while some class A drugs, such as MDMA, LSD, and magic mushrooms, were among the least harmful.
For example, social exchange theories have been used to predict human behaviour in romantic relationships by taking into account each actor's subjective sense of costs ( i . e ., volatility, economic dependence ), benefits ( i . e ., attraction, chemistry, attachment ), and comparison level of alternatives ( i . e ., if any viable alternative mates are available ).