TABLE 4.

Subject‐level specification with response time control (Hypothesis 3)

Dep var: Avg accuracy∈ [0,1]	All trials (20 trials per subject)		Hard trials (14 trials per subject)		Easy trials (six trials per subject)
Independent variable	(1) Coef (SE) [P‐value]	(2) Coef (SE) [P‐value]	(3) Coef (SE) [P‐value]	(4) Coef (SE) [P‐value]	(5) Coef (SE) [p‐value]	(6) Coef (SE) [P‐value]
Constant	0.739 (.009) [.000]	0.724 (.039) [.000]	0.726 (.010) [.000]	0.705 (.043) [.000]	0.785 (.009) [.000]	0.796 (.045) [.000]
No Sugar Diet (=1)	−0.025 (.011) [.017]	−0.018 (.011) [.117]	−0.027 (.012) [.026]	−0.017 (.013) [.178]	−0.026 (.012) [.031]	−0.022 (.013) [.097]
Medit Diet (=1)	−0.021 (.011) [.052]	−0.015 (.010) [.142]	−0.025 (.012) [.037]	−0.019 (.012) [.115]	−0.011 (.012) [.381]	−0.008 (.012) [.540]
Veggie Diet (=1)	−0.011 (.010)	−0.007 (.012) [.580]	−0.017 (.012) [.151]	−0.010 (.013) [.466]	−0.000 (.012) [.995]	−0.002 (.014) [.864]
Average RT	0.001 (.000) [.000]	0.001 (.000) [.000]	0.001 (.000) [.000]	0.001 (.000) [.000]	0.001 (.000) [.006]	0.0004 (0.000) [.027]
Age	‐	−0.001 (.001) [.109]	‐	−0.001 (.007) [.138]	‐	−0.001 (.001) [.220]
Female (=1)	‐	−0.008 (.008) [.318]	‐	−0.015 (.009) [.109]	‐	0.008 (.010) [.431]
CRT score	‐	0.008 (.002) [.000]	‐	0.009 (.002) [.000]	‐	0.007 (.002) [.002]
Stick to Diet	‐	0.001 (.002) [.592]	‐	0.001 (.003) [.617]	‐	0.001 (.003) [.679]
Supplements (=1)	‐	0.007 (.008) [.401]	‐	0.009 (.009) [.337]	‐	0.002 (.010) [.853]
Last Week Sleep level	‐	−0.001 (.003) [.654]	‐	−0.000 (.004) [.933]	‐	−0.004 (.004) [.322]
Sleepiness	‐	0.003 (.002) [.094]	‐	0.004 (.002) [.064]	‐	.001 (.002) [.616]
N	412	412	412	412	412	412
R 2	.1170	.1755	.1072	.1708	.0353	.0663

Note: P‐values given are for two‐tailed tests (one‐tailed tests appropriate for preregistered hypotheses).

Abbreviation: SE = standard errors.