Table 2.

Reliability of Study Variables

	Number of items	Coefficient omega
Variable (Indicator)		Age 10	Age 12	Age 14	Age 16
Self-esteem
SDQ	6	.80	.82	.83	.88
RSE	10	—	.85	.90	.90
Warmth
Child rates mother	18	.90	.94	.94	.95
Child rates father	18	.93	.95	.95	.96
Mother rates father	18	.93	.95	.95	.95
Father rates mother	18	.91	.91	.93	.93
Hostility
Child rates mother	17	.82	.86	.91	.90
Child rates father	17	.84	.90	.91	.93
Mother rates father	17	.87	.84	.87	.85
Father rates mother	17	.86	.84	.80	.85
Monitoring
Child rates mother	14	.89	.93	.94	.95
Child rates father	14	.95	.96	.96	.97
Mother rates mother	14	.87	.90	.92	.95
Mother rates father	14	.94	.96	.96	.96
Father rates father	14	.88	.91	.94	.94
Father rates mother	14	.92	.92	.94	.95
Involvement in education
Child rates mother	4	.70	.75	.79	.83
Child rates father	4	.93a	.87	.88	.88
Mother rates mother	4	.73	.70	.74	.72
Father rates father	4	.77	.77	.74	.76
Parental relationship
Mother’s rating	5	.95	.95	.96	.95
Father’s rating	5	.92	.96	.95	.95
Family values of mother	5	.85	.80	.86	.90
Family values of father	5	.87	.84	.84	.87
Depression of mother	10	.85	.83	.85	.83
Depression of father	10	.80	.79	.81	.78
Economic hardship
Mother rates subscale A	2	.87	.86	.86	.89
Mother rates subscale B	6	.94	.93	.94	.96
Mother rates subscale C	9	.79	.74	.78	.78
Father rates subscale A	2	.85	.83	.87	.87
Father rates subscale B	6	.94	.95	.94	.95
Father rates subscale C	9	.77	.79	.82	.82
Presence of father	1	—	—	—	—

Note. Dash indicates that variable was not assessed at a given wave (RSE) or that coefficient omega is not applicable for single item measures (presence of father). SDQ = Self-Description Questionnaire; RSE = Rosenberg Self-Esteem Scale; Subscale A = Can’t Make Ends Meet; Subscale B = Unmet Material Needs; Subscale C = Financial Cutbacks.

^aIn this case, the model for computing coefficient omega with the psych package in R did not converge. Therefore, omega was computed as described in Widaman et al. (2011).