Bibliography (9):

1. https://ifstudies.org/blog/on-internet-dating-sites-women-prefer-men-with-higher-incomes-and-more-education

2. Sex Differences in Mate Preferences Across 45 Countries: A Large-Scale Replication

3. Income attraction: An online dating field experiment

4. Sex Differences in Response to Deception Across Mate-Value Traits of Attractiveness, Job Status, and Altruism in Online Dating

5. High income men have high value as long-term mates in the U.S.: personal income and the probability of marriage, divorce, and childbearing in the US

6. Husband’s income, wife’s income, and number of biological children in the U.S.

7. Wikipedia Bibliography:

   1. Multilevel model

   2. Variance

   3. https://en.wikipedia.org/wiki/Spark_Networks  :

      https://en.wikipedia.org/wiki/Spark_Networks