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. Author manuscript; available in PMC: 2013 Feb 1.
Published in final edited form as: J Exp Child Psychol. 2011 Sep 25;111(2):212–229. doi: 10.1016/j.jecp.2011.08.012

Table 6.

Pairwise Contrasts between Each Profile Cluster with Respect to Growth in Fraction Skills (standard errors in parentheses).

Variable
Word Problem Estimation
Contrast B(SE) R2 B(SE) R2
Lower concepts versus:
    Lower concepts/higher procedures −.48(.54) .00 −.71(.65)** .02
    Higher concepts/lower procedures −.91(.77) .00 −2.26(.51)*** .05
    Higher concepts/higher procedures −2.31(.70)*** .04 −3.06(.59)*** .09
Lower concepts/higher procedures versus:
    Higher concepts/lower procedures 44(.71) .00 −.55(.62) .00
    Higher concepts/higher procedures −1.83(.66)** s: .01 −1.35(.60)* .01
Higher concepts/lower procedures versus:
    Higher concepts/higher procedures −1.39(.42)*** .02 −.81(.63) .00

Table Note: Values are unique estimates after controlling for estimated full scale IQ, reading, and prior ability (i.e., the autoregressor). All regression coefficient values negative in sign.