Psychological anthropology is an interdisciplinary discipline between cultural anthropology and psychology. It mainly studies and understands the psychological mechanism of culture's influence on members of its society, and finds psychological variables at the individual level and culture, society at the overall level. The relationship between economic, ecological and biological variables. Based on the above definitions, Which of the following options fall into the category of psychological anthropology:. ['Comparison of Poetic Styles Before and After May 4th.', 'Social mainstream values in contemporary popular discourse.', 'Grassland civilization and the development of Mongolian national character.', "Changes in the author's attitude towards father from The Back."]