. Author manuscript; available in PMC: 2014 Feb 1.

Published in final edited form as: Psychol Sci. 2013 Jan 14;24(2):123–130. doi: 10.1177/0956797612450893

Table 2.

Unstandardized Regression Coefficients for Differences per Birth Year (Between-Cohort Contrasts) and per Test Year (Within-Cohort Contrasts) in Composite Scores for Five Cognitive Abilities

	Original analyses		Analyses controlling for scaled scores
Cognitive ability	Birth year	Test year	Birth year	Test year
Vocabulary	−0.012 (0.001)	−0.037 (0.005)	−0.010 (0.000)	0.006 (0.003)
Reasoning	0.020 (0.001)	−0.051 (0.007)	0.024 (0.001)	−0.006 (0.005)
Spatial visualization	0.022 (0.001)	−0.050 (0.005)	0.023 (0.001)	−0.027 (0.005)
Verbal memory	0.019 (0.001)	−0.067 (0.005)	0.022 (0.000)	−0.023 (0.003)
Perceptual speed	0.029 (0.001)	−0.071 (0.004)	0.031 (0.000)	−0.046 (0.003)

Note: Standard errors are in parentheses.