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. Author manuscript; available in PMC: 2017 Nov 1.

Published in final edited form as: Psychol Aging. 2016 Nov;31(7):653–660. doi: 10.1037/pag0000127

Table 2.

Results (b) of MLM Analyses on Responses to Individual TLX Scales

	Scale
Effect	Mental Demands	Physical Demands	Temporal Demands	Effort	Performance	Frustration
Intercept	46.85^***	9.13^***	32.86^***	44.22^***	45.19^***	30.32^***
Age	7.83^*	10.49^**	8.91^*	9.26^*	1.10	8.14
Difficulty_linear	11.85^***	2.24^**	7.81^***	9.70^***	11.86^***	8.35^***
Difficulty_quadratic	−.06	.18^*	.19	.19	−.24	.34^*
Age × Difficulty_linear	−2.34^*	2.17^*	.23	−.70	−3.13^*	.47
Age × Difficulty_quadratic	−.35	−.16	−.06	−.24	−.15	−.44^*

Note: Scores on each scale could range from 0 to 100.

^***

p < .001

^**

p < .01

^*

p < .05