Kayla is conducting research for her honors thesis on the effects of feedback on job performance. Regardless of how participants perform, in one condition, they are given glowingly positive feedback, and in the other, they are given hurtfully negative feedback. Kayla notices that 90% of those in the positive-feedback condition return for the second part of the study, but only 30% of those in the negative-feedback condition return. Kayla is experiencing _______.
a. differential attrition
b. nonresponse bias
c. sampling selection bias
d. self-selection bias
Ans: A
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