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Field
Randomization Method
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Before
Stratified randomization implemented in Qualtrics. Stratification uses three binary baseline variables: (1) effectiveness gap of retrieval practice relative to rereading, coded above vs. below 0, based on the measure developed in the related study The Role of Information Frictions in Study Habit Choice and Academic Performance; (2) percentage of study hours spent rereading, coded above vs. below 45%, the average rereading share from the prior study; and (3) willingness to engage with AI to improve study habits, coded above vs. below 5 on a 0-10 scale. Qualtrics will implement random assignment and deliver the video treatment.
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After
Stratified randomization implemented in Qualtrics. Stratification uses three binary baseline variables: (1) effectiveness gap of retrieval practice relative to rereading, coded above vs. below 0, based on the measure developed in the related study The Role of Information Frictions in Study Habit Choice and Academic Performance; (2) percentage of study hours spent rereading, coded above vs. below 40%, the median rereading share from the pilot study; and (3) willingness to engage with AI to improve study habits, coded above vs. below 5 on a 0-10 scale. Qualtrics will implement random assignment and deliver the video treatment.
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