Department of Psychology School of Humanity and Administration Guangdong Medical University Dongguan Guangdong 523000 China;
Department of Psychology School of Humanity and Administration Guangdong Medical University Dongguan Guangdong 523000 China;
Department of Psychology School of Humanity and Administration Guangdong Medical University Dongguan Guangdong 523000 China;
Empty nest elderly; Happiness; Related factors; Multiple variable linear regression;