Moderators

Ask under what conditions the effect gets stronger, weaker, or flips direction. Not what carries the effect or what fakes it, but what dials it up or down, which explains why the same cause produces different results for different people or times.

Ask under what conditions the effect gets stronger, weaker, or flips direction. Not what carries the effect or what fakes it, but what dials it up or down, which explains why the same cause produces different results for different people or times.

Example

Late-night group chats may wreck sleep on school nights but do nothing on Saturdays, and the effect may be large for your 14-year-old and near zero for her older brother. So run the bedroom-phone test across two full weeks including weekends, and track weeknights separately.