Table A1.

Goodness‐of‐Fit (BIC) of Two Different Probabilistic Models (1PL vs. 2PL for the Achievement Measures in the Present Study)

Construct	Model	BIC	AIC	cAIC
Ck	1PL	30,212.62	29,507.22	30,330.62
	2PL	30,905.99	29,507.15	31,139.98
Si	1PL	43,139.02	42,214.19	43,293.03
	2PL	43,971.50	42,133.86	44,277.50
Vs	1PL	77,683.33	77,507.60	77.712,34
	2PL	77,033.14	76,693.79	77.089,13
Gca	1PL	96,540.95	96,353.10	96.000,53
	2PL	95,940.52	95,576.93	96.571,96

Note. BIC = Bayesian Information Criterion, AIC = Akaike's Information Criterion, consistent Akaike's Information Criterion = cAIC, 1PL = one parameter logistic, 2PL = two parameter logistic, ck = content knowledge, si = scientific inquiry, vs = verbal skills, gca = general cognitive abilities.