Correlations of the manifest variables of the mediation model.

*** p The manifest variables “Urge to buy” and “Arousal” were assessed experimentally using the cue-reactivity paradigm, whereas the variables “Variety”, “Anonym”, and “Immediate positive feelings” were assessed by questionnaire. s-IATshopping = Short Internet Addiction Test modified for shopping显变量（manifest variables）中的“购买冲动（Urge to buy）”与“唤醒度（Arousal）”采用线索反应范式（cue-reactivity paradigm）开展实验评估；而“多样性（Variety）”“匿名性（Anonym）”与“即时积极感受（Immediate positive feelings）”则通过问卷调查进行测评。s-IATshopping即针对购物场景修订的简版网络成瘾量表（Short Internet Addiction Test modified for shopping）