The country in which psychology established itself primarily in connection with the study of mental testing, for example, the statistical aggregation of measurable differences between minds (animal and human) was :

Question

Quizplus · Accepted Answer

Great Britain is where psychology established itself primarily in connection with the study of mental testing, focusing on the statistical aggregation of measurable differences between minds. This approach was notably influenced by the work of Sir Francis Galton, among others, who were pioneers in the field of psychometrics and differential psychology.

The Country in Which Psychology Established Itself Primarily in Connection