“…Gold Standard Questions & Qualification Tests [84], [113] Current Answer Distribution [168], [98], [8], [136] Previous Answers & Reputation Scores [133], [146] Worker Attributes Demographics [96], [148], [41], [30] Personality Tests [95], [96], [114] Skills [119], [106] Cognitive Tests [52], [71], [72] Work Device Features [44], [70] Worker Context [82], [73] Worker Behaviour Behavioural Traces [142], [65], [45], [60] Social Media Data [33], [165] 5.3.1 Gold Standard estions. Gold Standard Questions are questions with a known answer.…”