Table 3

Main effects of study design on interest, enjoyment, study effort, and contribution to science

	Interest			Enjoyment
	b	SE	η_p²	b	SE	η_p²
Intercept	7.36***	0.25	–	6.45***	0.26	–
Study duration	−0.31	0.22	0.003	−0.54*	0.23	0.010
Prompt frequency	−0.56*	0.22	0.011	−0.89***	0.23	0.025
Prompt length	−0.39	0.22	0.005	−0.14	0.23	0.001
Compensation	0.43	0.22	0.006	0.28	0.23	0.003

	Effort			Contribution to science
	b	SE	η_p²	b	SE	η_p²
Intercept	4.73***	0.26	–	7.32	0.20	–
Study duration	1.19***	0.23	0.044	0.24	0.18	0.003
Prompt frequency	0.60**	0.23	0.011	−0.30	0.18	0.005
Prompt length	1.01***	0.23	0.031	−0.07	0.18	<0.001
Compensation	−0.16	0.23	0.001	0.10	0.18	0.012

*P<0.05; **P<0.01; ***P<0.001.