Items:: 20, Estimated time to complete: 4 Minutes
Source:Lay, Clarry H. (1986). At Last, My Research Article on Procrastination. Journal of Research in Personality, 20, 474-495.
Items:: 36, Estimated time to complete: 7 Minutes
Source:Fraley, R. C., Waller, N. G., & Brennan, K. A. (2000). An item response theory analysis of self-report measures of adult attachment. Journal of Personality and Social Psychology, 78(2), 350-365.