In order to evaluate profoundly and comprehensively antidepressant effect of Morinda officinalis oligosaccharides (MOs),the present study has investigated its role in two different depressive animal models: the forced swimming test and the learned helplessness.

Tht symptom and therapy of learned helplessness of primary school pupils and middle school students;

Objective: To study the effect of inescapable foot shock on the expression of c-FOS protein in the hippocampus of learned helplessness (LH) rats.

This paper introduced the concept of learned helplessness and analyzed students symptom of learned helplessness in physical education.

The root of "mental poverty" is learning helplessness,and pessimistic explanatory style is the cognitive reason of learning helplessness.

This paper expounds synoptically the attribution theory, self-efficiency sense theory and learning helplessness theory and explores how to actively attribute in foreign language teaching by combining foreign language practice so as to enhance students sense of self-efficiency, inspire students motivation of achievement and improve teaching efficiency.

In this paper, first of all, a review was presented on the history of researches on conditional reasoning, and the social contract theory and information gain model was introduced in detail.