**Questionnaires used in HPP-China (Tsinghua U)**
Social Network Index (Cohen, Doyle, Skoner, Rabin, & Jack M. Gwaltney, 1997), translated and back translated.
Trait Self Control (Tangney, Baumeister, & Boone, 2004), We used the translated and validated version by (于斌, 2014), which has 13 items.
Health and Stress (Cohen, Kamarck, & Mermelstein, 1983); WHO for Health Question - this is a separate question from the stress index!) ( we used a translated and validated Perceived stress Scale, included 14 items, alpha values for the positive and negative subscales were 0.86 and 0.77, respectively (Leung, Lam, & Chan, 2010).
Attachment to Smartphone (Yildirim & Correia, 2015), translated and back translated.
Attachment in Romantic Relationships (Fraley & Shaver, 2000) ( No translated version but a revised version, many items have been modified (田瑞琪, 2004), so we used the translated-back-translated version by our own.
Southampton Nostalgia Scale (Barrett et al., 2010)(modified). translated and back translated.
STRAQ, translated and back translated.
Alexithymia (Kooiman, Spinhoven, and Trijsburg (2002); WE DID NOT USE ALL QUESTIONS!) （translated and back translated）.
Attachment to Homes (Harris, Brown, and Werner (1996); only home and rootedness, dropped some items!), translated and back translated
Sugar Intake (Henriksen, Torsheim, and Thuen (2014), this is from a broader scale), translated and back translated
**Reference**
Barrett, F. S., Grimm, K. J., Robins, R. W., Wildschut, T., Sedikides, C., & Janata, P. (2010). Music-evoked nostalgia: Affect, memory, and personality. Emotion, 10(3), 390-403. doi:10.1037/a0019006
Cohen, S., Doyle, W. J., Skoner, D. P., Rabin, B. S., & Jack M. Gwaltney, J. (1997). Social ties and susceptibility to the common cold. JAMA, 277(24), 1940-1944. doi:10.1001/jama.1997.03540480040036
Cohen, S., Kamarck, T., & Mermelstein, R. (1983). A Global Measure of Perceived Stress. Journal of Health and Social Behavior, 24(4), 385-396.
Fraley, R. C., & Shaver, P. R. (2000). Adult romantic attachment: Theoretical developments, emerging controversies, and unanswered questions. Review of General Psychology, 4(2), 132-154. doi:10.1037/1089-2680.4.2.132
Harris, P. B., Brown, B. B., & Werner, C. M. (1996). Privacy Regulation and Place Attachment: Predicting Attachments to a Student Family Housing Facility. Journal of Environmental Psychology, 16(4), 287-301. doi:10.1006/jevp.1996.0025
Henriksen, R. E., Torsheim, T., & Thuen, F. (2014). Loneliness, Social Integration and Consumption of Sugar-Containing Beverages: Testing the Social Baseline Theory. PLoS One, 9(8), e104421. doi:10.1371/journal.pone.0104421
Kooiman, C. G., Spinhoven, P., & Trijsburg, R. W. (2002). The assessment of alexithymia: A critical review of the literature and a psychometric study of the Toronto Alexithymia Scale-20. Journal of Psychosomatic Research, 53(6), 1083-1090. doi:10.1016/S0022-3999(02)00348-3
Leung, D. Y., Lam, T.-h., & Chan, S. S. (2010). Three versions of Perceived Stress Scale: validation in a sample of Chinese cardiac patients who smoke. BMC Public Health, 10(1), 1-7. doi:10.1186/1471-2458-10-513
Tangney, J. P., Baumeister, R. F., & Boone, A. L. (2004). High Self-Control Predicts Good Adjustment, Less Pathology, Better Grades, and Interpersonal Success. Journal of Personality, 72(2), 271-324. doi:10.1111/j.0022-3506.2004.00263.x
Yildirim, C., & Correia, A.-P. (2015). Understanding Nomophobia: A Modern Age Phobia Among College Students. In P. Zaphiris & A. Ioannou (Eds.), Learning and Collaboration Technologies (Vol. 9192, pp. 724-735): Springer International Publishing.
田瑞琪. (2004). 大学生成人依恋的测量及相关人格研究. (硕士), 上海师范大学. Available from Cnki
于斌. (2014). 工作记忆能力与自我控制的关系及其机制研究. (博士), 南开大学. Available from Cnki
