Table 1.

Summary of the literature linking testosterone administration and the RMET. (In ‘repeated task’ paradigms, participants completed the RMET twice: prior to any treatment in experiment 1 in this study, and after receiving a placebo or testosterone in [18]. Effect size is calculated using Hedge's bias-correct effect size owing to small sample size and unequal variances between treatment and control groups.)

	study design				results
	sex	n	design	dose	main effect	effect size	s.e of effect size	95% CI for effect size		2D : 4D moderation
van Honk et al. [18]	F	16	within subject; repeated task	0.5 mg sublingual	one-tailed Wilcoxon, p = 0.01	−0.49	0.25	−1.19	0.21	low right-hand ratio, negative relationship
Olsson et al. [17]	F	33	within subject; repeated task	50 mg transdermal	one-tailed, p = 0.048	−0.33	0.13	−0.15	0.82	no
Bos et al. [16]	F	16	within subject; no repetition	0.5 mg sublingual	no effect, p = 0.78	−0.10	0.10	−0.60	0.79	no
Carré et al. [15]	M	30	within subject	150 mg transdermal	no effect, p = 0.25	0.20	0.35	−0.70	0.31	low left-hand ratio, negative relationship
Nadler et al. experiment 1	M	241	between subject; no repetition	100 mg transdermal	no effect, p = 0.83	0.03	0.36	−0.19	0.28	no
Nadler et al. experiment 2	M	400	within subject; no repetition	11 mg intranasal	no effect, p = 0.66	0.04	0.26	−0.15	0.24	no