Table 3.

Continuous Age Studies Included in Meta-analysis

Study	Incentive	Delay	Measure	Age		N	z	Var z
				Mean	SD
Bickel 2014	hypothetical	days	parameter	31.64	11.25	1163	−0.05	0.00
Boyle 2012	hypothetical	months	parameter	83.1	6.7	388	−0.04	0.00
Chao 2009	hypothetical	days	parameter	46.52	15.09	175	0.08	0.01
Göllner 2018	hypothetical	days	parameter	46.48	--	96	0.13	0.01
Halfmann 2013	hypothetical	weeks	parameter	68.19	19.74	48	0.05	0.02
Hampton 2018	hypothetical	years	parameter	41	--	2564	−0.04	0.00
Johnson 2015	hypothetical	hours	parameter	35.57	--	197	−0.23	0.01
Kirby 2002	real	days	parameter	27.4*	--	154	0.31	0.01
Lee 2018	hypothetical	days	parameter	26.79	9.1	11157	−0.07	0.00
Lempert 2018	hypothetical	days	parameter	72.07	6.83	74	−0.07	0.01
Li 2020 Study 2	hypothetical	days	parameter	45.52	16.28	619	0.06	0.00
Löckenhoff 2011	real	days	parameter	52	20.5	98	−0.34	0.01
Mahalingam 2018 Sample 3	hypothetical/real	year	parameter	36.16	12.11	189	−0.02	0.01
Mahalingam 2018 Sample 4	hypothetical	year	parameter	38.01	13.42	208	0.10	0.00
Mahalingam 2018 Sample 5	hypothetical	year	parameter	27.81	18.71	151	0.01	0.01
Mahalingam 2018 Sample 6	hypothetical	year	parameter	35.79	11.5	420	0.03	0.00
O’Hora 2016	hypothetical	years	parameter	30.93	12.1	840	−0.01	0.00
Reimers 2009	hypothetical	months	proportion	--	--	42863	−0.05	0.00
Sanchez-Roige 2018	hypothetical	days	parameter	53.79	16.08	23664	0.00	0.00
Seaman 2018	real	weeks	parameter	49.71	17.92	89	0.12	0.01
Sheffer 2016	hypothetical	days	parameter	34	11	1122	0.05	0.00
Sisso 2020	hypothetical	weeks	proportion	49.34	14.64	2630	−0.01	0.00
Stoeckel 2013	real	days	parameter	33.4	9.8	19	−0.67	0.06
Tschernegg 2015	hypothetical	months	proportion	25.22	--	70	−0.10	0.01
Wolfe 2017	hypothetical	years	proportion	36.92	11.7	13198	0.04	0.00