Answer:
the change in sexuality (topic)
questions to be asked: ¿Is sexuality an important part of social life? ¿how sociology and psychology relates to common attitudes towars sex?
Explanation:
While a sociologist will be interested in the way sexuality has been influenced by media, social movements and trends over time, psychologists might very likely observe the changes in attitudes, behaviour and focus more in the individual interactions in reference to mental health, emotions, etc.
Think of sociology as a science that puts emphasis on society as a more o less defined and abstract structure where changes in sexuality happen as larg portions of this society experiences. The notion of what is socially accepted or politically correct would be more a focus of study, or the changes in the belief system of a particular group in relation to how they see sexual practices.
To the contrary, psychology would be aware of the former but focus on the self esteem, the experiences that women and men report and how they affect their behaviour in the process like being in love, the sexual act, the ending of a relationship,etc.
For both cases of course, the use of quantitative or qualitative methods often lead to a mixed approach. They can use surveys, statistics, then put it together in numerical terms. The qualitative would rather go for deep interview with a selected subject, deeply searching for specific or personal motivations. Today most approaches make us of a combination of them.
