Abstract: Abstract: With the increase of the number of problematic mobile social network usage, the following psychological problems are emerging, the traditional norm referencing test can no longer meet the needs of screening and evaluating of this problem. The existing evaluation tool mainly has the following problems: First, most of the tools continue the research idea of internet addiction, which is based on the symptom criteria of pathological gambling, and leads to a lot of similarities in the structure of the tools; Second, the current preparation of such tools is mainly based on the use of Facebook, according to the features of Facebook to set the appropriate topic; Third, the problematic mobile social network usage related scales has no specific distinction between the online social network based on the traditional Internet or the online social network based on the mobile terminal; Fourth, existing mobile phone or social network related evaluation tools can only explore the basic structure or severity of the phenomenon, but does not have the function of screening; Fifth, this kind of tool is mainly based on foreign research, and there is no special screening assessment tool for mobile social network in our country. In order to further screen and evaluate the problematic mobile social network usage, based on the relevant symptoms and theoretical structures of the Handbook on Mental Illness Statistics and Diagnosis (DSM-5) and the realistic social representation of the problematic mobile social network usage, this paper uses Angoff method to define and evaluate the problematic mobile social network usage for adolescents. The classic Angoff method requires the selection of highly experienced experts to form a panel that assesses the probability of affirmative answers to a test question for a typical person who has just reached a certain minimum level of competence, and the score on the entire scale averaging to obtain a critical value, if the test scores greater than the critical value is considered to reach a certain level, conversely have not reached a certain level. The study improved Angoff method, provide a priori probability to choose for the experts in the expert evaluation, and two evaluation exercises in the official evaluation. Therefore, all experts are skilled operator, which can reduce the error caused by the expert is not skilled enough. According to the standardized process compiled by the questionnaire, this study collected data from university teachers, middle school teachers, psychological counsellors, middle school students and college students.?The evaluation samples of Angoff method include teacher expert sample, adolescent expert sample, reliability and validity test sample. The expert sample is composed of 15 teachers and 15 teenagers. The reliability test samples were 768 adolescents and 90 problem users and normal users. The results showed that: there are eight or more questions with positive answers can be assessed as problematic mobile social network usage in the screening assessment questionnaire. In the empirical discriminant validity test, the detection rate of normal users was 12%, and the detection rate of problematic users was 91.1%. Based on the Angoff method, the evaluation tool for the problematic mobile social network usage has a good psychological measurement attribute, which can be used for the evaluation of the problematic mobile social network usage.

Key words: Keyword: adolescent, mobile social network, Angoff method, screen and evaluate

摘要： 摘 要 使用安戈夫法界定青少年问题性移动社交网络使用评估标准。结果发现，筛查评估问卷中8个及以上题目持肯定回答即可评估为问题性移动社交网络使用，实证区分效度中正常使用者检出率为12%，问题性使用者检出率为91.1%。基于安戈夫法的青少年问题性移动社交网络使用评估工具有较好的心理学测量属性，可用于青少年问题性移动社交网络使用的筛查评估。

关键词: 关键词：青少年, 移动社交网络, 安戈夫法, 评估标准