Table 1. Coefficients, standard errors, and standardized coefficients from regressions of children's completed schooling on family income and demographic measures.

	Age 14 in 1968–1999	Age 14 in 1968–1981	Age 14 in 1982–1999	Coefficient Differences (first half / second half)	Age 14 in 1968–1973	Age 14 in 1980–1985	Age 14 in 1994–1999	Coefficient Differences (first six / last six years)
Natural Log Parent Income, Ages 14–16	0.629**(0.058) [β = 0.215]	0.700**(0.100) [β = 0.239]	0.625**(0.071) [β = 0.214]	p = .535	0.682**(0.169) [β = 0.234]	0.634**(0.121) [β = 0.217]	0.641**(0.102) [β = 0.219]	p = .835
Mother's Years of Education	0.226**(0.016) [β = 0.294]	0.198**(0.021) [β = 0.258]	0.239**(0.022) [β = 0.311]	p = .182	0.175**(0.030) [β = 0.228]	0.292**(0.038) [β = 0.380]	0.231**(0.033) [β = 0.301]	p = 207
Number of Siblings	−0.111**(0.022) [β = −0.116]	−0.126**(0.024) [β = −0.132]	0.007(0.037) [β = 0.007]	P < .001	−0.114**(0.030) [β = −0.120]	−0.051(0.050) [β = −0.053]	−0.023(0.056) [β = −0.024]	p = .151
Two-Parent Family (% of years, ages 14–16)	0.287*(0.082) [β = 0.060]	0.177(0.123) [β = 0.037]	0.379*(0.109) [β = −0.079]	p = .218	0.207(0.185) [β = 0.043]	0.185(0.176) [β = 0.039]	0.427*(0.169) [β = 0.089]	p = .381
Mother's Age at Birth	0.038**(0.008) [β = 0.106]	0.028*(0.012) [β = 0.078]	0.034*(0.012) [β = 0.095]	p = .725	0.022(0.018) [β = 0.061]	0.055*(0.023) [β = 0.154]	0.059*(0.021) [β = 0.167]	p = .166
Number of Observations	6,072	3,005	3,067		1,341	954	1,312

Notes: Regressions are weighted using the PSID attrition-adjusted weight. Family-cluster-adjusted standard errors are shown in parentheses. Standardized coefficients are shown in brackets. All models include the following set of controls: (1) highest completed schooling of the mother when the child was 14 years old; (2) number of siblings born to the child's mother; (3) fraction of years between ages 14 and 16 that the child's household contained two biological parents; (4) age of the mother at the child's birth; (5) child's sex (female = 1); (6) race/ethnicity (black and Hispanic); (7) whether the child was the mother's firstborn (yes = 1); and (8) age of mother at her first birth.

^*p < .05;

^**p < .01