If Dr. Chuang is an evolutionary psychologist, then he will most likely write researches about psychology that focuses more about theories regarding traits of an individual in the person’s psychological or mental capabilities or their traits in which is being examined to know its evolution.
I believe the answer is: "Biologically built-in mate preferences among males vs. females"
Evolutionary psychologists operate on the assumption that the way people think is strongly correlated with the process of natural selection. Their research paper would most likely revolves around how the behaviours made by male and female is eventually made in order to obtain the best possible mate to pass better genetic materials to the offspring.
