The purpose of the present study was to discriminate between the 2 dominant perspectives governing research on the nature of marital change over the transition to parenthood. Progress can be made in understanding this transition by recognizing the role of uncontrolled sources of variability in research designs, defining and using control groups, and timing of data collection around the child's arrival, and the authors conducted a study incorporating these methodological refinements. Growth curve analyses were conducted on marital satisfaction data collected twice before and twice after the birth of the 1st child and at corresponding points for voluntarily childless couples (N = 156 couples). Spouses who were more satisfied prior to pregnancy had children relatively early in marriage, and parents experienced greater declines in marital satisfaction compared to nonparents. Couples with planned pregnancies had higher prepregnancy satisfaction scores, and planning slowed husbands' (but not wives') postpartum declines. In sum, parenthood hastens marital decline--even among relatively satisfied couples who select themselves into this transition--but planning status and prepregnancy marital satisfaction generally protect marriages from these declines.

Given the powerful implications of relationship quality for health and well-being, a central mission of relationship science is explaining why some romantic relationships thrive more than others. This large-scale project used machine learning (i.e., Random Forests) to 1) quantify the extent to which relationship quality is predictable and 2) identify which constructs reliably predict relationship quality. Across 43 dyadic longitudinal datasets from 29 laboratories, the top relationship-specific predictors of relationship quality were perceived-partner commitment, appreciation, sexual satisfaction, perceived-partner satisfaction, and conflict. The top individual-difference predictors were life satisfaction, negative affect, depression, attachment avoidance, and attachment anxiety. Overall, relationship-specific variables predicted up to 45% of variance at baseline, and up to 18% of variance at the end of each study. Individual differences also performed well (21% and 12%, respectively). Actor-reported variables (i.e., own relationship-specific and individual-difference variables) predicted two to four times more variance than partner-reported variables (i.e., the partner’s ratings on those variables). Importantly, individual differences and partner reports had no predictive effects beyond actor-reported relationship-specific variables alone. These findings imply that the sum of all individual differences and partner experiences exert their influence on relationship quality via a person’s own relationship-specific experiences, and effects due to moderation by individual differences and moderation by partner-reports may be quite small. Finally, relationship-quality change (i.e., increases or decreases in relationship quality over the course of a study) was largely unpredictable from any combination of self-report variables. This collective effort should guide future models of relationships.

Two studies examined the association between depressive symptoms and romantic involvement in adolescence and tested the hypothesis that romantic involvement is associated more strongly with symptoms among adolescents who have a more preoccupied style of relating, compared to adolescents who have a less preoccupied style of relating. Study 1 (N = 96 early adolescent females) examined concurrent associations and Study 2 (N = 80 late adolescent males and females) examined longitudinal associations. In both age groups, romantic involvement was associated with greater depressive symptoms and this was most true among adolescents with a preoccupied style of relating. Implications for models of depression and adolescent romantic functioning are discussed.

These findings highlight the potential value of cost-effective interventions such as RA, cast doubt on the unique benefits of skill-based interventions for primary prevention of relationship dysfunction, and raise the possibility that skill-based interventions may inadvertently sensitize couples to skill deficits in their relationships.

Associations among prenatal expectations, the extent to which expectations were confirmed or disconfirmed, and trajectories of marital satisfaction over the transition to parenthood were assessed 7-11 times in a sample of newlywed couples. Piecewise growth curve analyses were conducted to examine levels of marital satisfaction at the beginning of marriage and rates of change over 2 periods: from the beginning of marriage through the 3rd trimester of pregnancy and from the 3rd trimester of pregnancy through 18 months postpartum. Postpartum marital decline was greater than decline from marriage through pregnancy. Spouses who were more satisfied at the beginning of marriage reported higher expectations. There was marked variability in the extent to which prenatal expectations were confirmed; some expectations were unfulfilled, others were met, and still others were surpassed. Associations between the extent to which expectations were confirmed and rates of change in marital decline differed as a function of the specific type of expectation. Implications for understanding vulnerability and resiliency in couples negotiating the transition to parenthood are discussed.