Este livro centra-se principalmente na aplicação da psicologia à economia aplicada e à prática do ensino. Os casos representativos incluem os seguintes estudos: (1) Explorando o impacto da escalada da fricção comercial sino-americana nas importações de soja da China a partir da perspetiva da ansiedade psicológica do investidor; (2) O impacto da inclusão financeira digital no emprego feminino na China: From the Perspective of Solving the Employment Dilemma and Realizing Psychological Happiness; (3) Empirical Analysis of Infrastructure Construction on Export Performance of Trade in Services under the Belt and Road Initiative Considering Psychological Needs and Happiness Levels; (4) A New Research Framework of International Development of Strategic Emerging Industries considering Residents' Happiness and Psychological Analysis of Decision Makers; (5) Diretors' and Executives' Liability Insurance and Investment Efficiency: A Study Based on Managers' Psychological Anxiety and Management Defense Theory; (6) The Impact of Online Teaching on Students' Mental Health State and Happiness of Promoting Teaching and Learning.