BECE. Newsletter Vol.7, No.2, 2021 1011 The Effect of Harsh Parenting on Smartphone Addiction of Adolescents By Qi, D., Lin, Y., & Liu, Q. Correspondence to: Qinxue Liu, Associate Professor, Central China Normal University, China. Email: qinxueliu@mail.ccnu.edu.cn ASED on the questionnaire statistical results of 3,219 students from two non-boarding key secondary schools from Wuhan and Shiyan, the study published in Psychological Development and Education Research estab- lished the mediation effect model, regulating effect model, and intermediary effect model with regulation to explore the mediating effect of core self- evaluation in the process of smartphone addiction through harsh parenting among adolescents, and also the regulating effect of friendship quality. The main results are as follows:  According to the analysis of harsh parenting, core self-evaluation, friendship quality. And smartphone addiction, it is concluded that all the variables were significantly correlated. Thereinto, harsh parent- ing has a significant negative correlation among core self-evaluation and friendship quality; core self-evaluation has a significant negative correlation among smartphone addiction and friendship quality; harsh parenting smartphone addiction; core self-evaluation was sig- nificantly positively correlated to friendship quality.  A mediating effect model was established with harsh parenting as the predictive variable, smartphone addiction as the dependent vari- able, core self-evaluation as the mediating variable, and gender & grade as the control variables. The results showed that core self- evaluation plays a partial mediating effect between harsh parenting and smartphone addiction.  A moderating effect model was established with harsh parenting as the independent variable, friendship quality as the moderating varia- ble, core self-evaluation as the dependent variable, and gender & grade as the control variables. The results showed that friendship quality had a significant moderating effect on the prediction effect of harsh parenting on core self-evaluation. For the high friendship qual- ity group, the core self-evaluation of adolescents decreased signifi- cantly with the increase of harsh parenting degree, while comparing B Vol.7, No.2, 2021 1012 to the low friendship quality group the decline degree of the high friendship quality group was considerably high.  Using the structural equation technology to conduct the integrated model examination of the two steps above-mentioned. The results showed that harsh parenting had a direct effect on adolescent smartphone addiction and also an indirect effect on adolescent smartphone addiction through core self-evaluation. Meanwhile, the effect of harsh parenting on core self-evaluation was moderated by friendship quality. Source: Psychological Development and Education, 2020; 36(6):677-685.