Innovative Retention Methods in Longitudinal Research: A Case Study of the Developmental Trends Study

Minimizing participant attrition is vital to the success of longitudinal research. The Developmental Trends Study (DTS), a longitudinal study of the development of disruptive behavior disorders, has achieved a low attrition rate throughout the study. The development of early retention strategies, managing contact and scheduling history through the use of electronic databases, interviewer persistence, and the emergence of new electronic search methods have contributed to the success of our study. A literature review of retention methodology and practical solutions to maintain participant cooperation is described. A case study of the DTS is presented to inform researchers in longitudinal research on new methods used to maintain high retention rates.     

Potential dropouts in a longitudinal study: Prevalence,stability, and associated characteristics

This study quantifies the prevalence and associated characteristics of subjects in a longitudinal study who are difficult to schedule and thus may become potential study dropouts. Although subject attrition over three years remained extremely low, many families were difficult to schedule for their assessments and this remained rather constant over time. Intercorrelations between the measures of scheduling difficulty were high, indicating good internal validity of the constructs. Stability of these measures from year to year was low, making it difficult to predict which families required more staff effort or were at risk for dropping out of the study in any one year. Race appeared to be associated with several measures of scheduling difficulty, while psychiatric characteristics of the sample were less so.     

Development of infant crying behavior: A longitudinal case study

This study documents the development of infant crying behavior during the second half of the first year (across a key developmental transition). Two female infants were observed twice a month for 6 months when the infants were between 7 and 14 months of age. The infants exhibited crying behavior that seemed to become more sophisticated with increasing age. This marked a proactive stance in communicating with the mother on the part of the infant. Interestingly, at 11–12 months, “fake crying” was observed during a naturalistic interaction with the mother. This implied that deceptive infant behavior could be seen at quite an early stage.     

Implications of college-age narcissism for psychosocial functioning at midlife: Findings from a longitudinal study of women

Positive and negative implications of two types of college-age narcissism on psychosocial functioning at midlife were studied in a longitudinal sample of women. Both types were scored with self-report measures when the women were, on the average, age 21. Throughout the first half of their adult life, high scorers on covert narcissism presented themselves as lacking in confidence and having low morale; high scorers on overt narcissism described themselves as wanting admiration, being independent, and being forceful. Positive outcomes associated with covert narcissism included the development of insight and of a differentiated sense of the self and, in the case of overt narcissism, entailed an involvement in high-status and creative work careers. At midlife, high scorers on covert narcissism experienced negative affect and feelings of being neglected, whereas high scorers on overt narcissism experienced family conflict and problems with impulse control. The personality characteristics associated with both types of narcissism remained stable from the early 20s to early 50s.     

Prospective prediction of nonsuicidal self-injury: a 1-year longitudinal study in young adults

Nonsuicidal self-injury (NSSI) has become a significant public health problem. Although numerous studies have examined cross-sectional psychological correlates of NSSI, there has been little research examining predictors of NSSI over time. The present study examined cross-sectional and longitudinal correlates of NSSI in 81 young adult self-injurers (M age = 19, 74.1% female, 51.9% Caucasian), 51 of whom were followed up 1 year later. At baseline, participants completed self-report measures of NSSI, Axis-I disorders, borderline personality disorder (BPD), and impulsivity, as well as an implicit measure of NSSI attitudes and identity. One year later, participants completed a Timeline Followback Method whereby they indicated their engagement in NSSI over the previous 12 months. Analyses replicated many known cross-sectional correlates of NSSI, including symptoms of several Axis-I disorders and BPD. However, many of these same variables failed to predict the course of NSSI over the 1-year follow-up. The only variables to prospectively predict NSSI were past NSSI (i.e., frequency, methods, and recency of NSSI), participants’ behavioral forecast of their engagement in future NSSI, and BPD features. Findings suggest that many cross-sectional correlates of NSSI may not be useful for predicting subsequent NSSI. Instead, NSSI severity and BPD features appear to best predict continued engagement in NSSI.     

Causal attributions in clinical subtypes of depression: A longitudinal study of inpatients

The study material comprised inpatients who met DSM-III-R criteria for (a) dysthymia without panic and/or agoraphobia (n=20), (b) major depression without panic and/or agoraphobia (n=26), (c) both major depression and panic with agoraphobia (comorbid patients) (n=17), and (d) panic with agoraphobia without any depressive disorder (n=22). The patients completed the Attributional Style Questionnaire and the Beck Depression Inventory and were assessed on the Comprehensive Psychopathological Rating Scale upon admission to the hospital and at discharge. Some of the self-report scales were also administered at 1-year follow-up. It was assumed that dysthymic patients and patients with both major depression and agoraphobia would exhibit more biased attributions for bad events than purely major depressed and purely agoraphobic patients. However, inconsistent with this hypothesis, obtained group differences could be statistically reduced to differences in depressive symptom level. At each assessment, attributions for bad events correlated significantly with depressive symptom level. Attributional bias tended to decrease during treatment. However, most attribution subscales exhibited moderate stability in terms of correlation across assessments. Attributing bad events to global causes proved to predict later depression.This research was supported by grants from the Halldis and Josef Andresen Legacy.     

Examination of the processing speed account in a population-based longitudinal study with narrow age cohort design

The processing speed account suggests that general slowing of mental processing speed results in an overall decline, especially age-related decline, in other cognitive domains. Support for the speed account comes mainly from cross-sectional studies with participants that vary in age (age-heterogeneous samples). This study investigated how well variations in processing speed predict change of episodic recall in a longitudinal framework and examined with the Narrow Age Cohort (NAC) design. Data were obtained from Betula, a population-based longitudinal study. Both 5-year (n= 490; Time 3 - Time 4) and 10-year follow-up results (n= 608; Time 1 - Time 3) were used. In both samples, which were subjected to prospective dementia screening, we found considerably weaker associations in longitudinal data compared to cross-sectional, and also weaker associations in age-homogeneous than in age-heterogeneous samples. The results provide little support for the speed account.     

Global self-evaluations and perceived instability of self in early adolescence: A cohort longitudinal study

A cohort longitudinal design with four adjacent cohorts of students ( n = 1689) followed over two years was used to study key issues identified in the research literature on the development of self-evaluations in early adolescence. There was no clear relationship between age/grade and self-evaluations. We found no support for a "stressful periods" hypothesis with respect to self: Possible changes were very gradual and quite small. However, there was a consistent "relative age" effect implying that younger students within a grade had more negative self-evaluations. There were small but consistent sex differences in self-evaluations in favor of the boys; more detailed analyses of very negative self-evaluations suggested that the early adolescent years are the period in which a sex difference in depression related symptomatology begins to emerge. Finally, the usefulness of some kind of effect size measure and advantages and problems associated with a cohort longitudinal design were discussed.     

Socioemotional behavior and satisfaction in marital relationships: a longitudinal study.

The interplay between 3 types of socioemotional behavior (affection, sexual interest, and negativity) and marital satisfaction was studied using data from newly married couples followed over 2 years. Affection and negativity (but not sexual interest) were consistently associated cross-sectionally with marital satisfaction. Longitudinal analyses revealed a gender-differentiated pattern suggesting a more complex relationship between satisfaction and marital behavior than previously shown. Negativity, regardless of whether it was expressed by the husband or the wife, was associated with declines in wives' (but not husbands') satisfaction. Wives of husbands who were relatively negative early in marriage became more negative themselves. Wives who were relatively less satisfied early in marriage (but not husbands) were married to spouses who became more negative with time.     

Authoritarianism as a personality trait: Evidence from a longitudinal behavior genetic study

Authoritarianism has long been conceived of as a highly stable personality trait ( and ), though recent accounts have argued that authoritarianism is too malleable to justify this conception. We provided a test of the trait conception of authoritarianism by measuring its stability in a community sample of twins over a 15 year period, and by identifying the source of any stability with biometric modeling. Our results showed that authoritarianism exhibited a high degree of rank-order stability (r = .74). Biometric analyses indicated that this stability derived primarily from genetic influences, with changes in authoritarianism due to the unique experiences of the individual. In both of these respects, our results were highly comparable to those reported for other personality traits in previous work, indicating support for the trait conception of authoritarianism. Other results of note included a higher degree of stability among the more educated portion of the sample, supporting a hypothesis by Krosnick and Alwin (1989).     

A longitudinal study of psychosocial distress in breast cancer: Prevalence and risk factors

This longitudinal study was conducted among 102 women with non-metastasic breast cancer to identify the time evolution and prevalence of distress at specific times through diagnosis and treatment of disease: preliminary diagnosis, surgery, definitive diagnosis and chemotherapy. Additionally, the study aimed to examine the role of demographic, medical and psychosocial factors on distress. The results indicated that prevalence of distress was higher at initial diagnosis (25%) than the following time points (approximately 17%). The differences inter-individuals in the levels of distress were observed over the four assessments. No relation between distress and demographic and medical factors was found. However, psychosocial aspects were significant risk factors. Patterns of emotional suppression and specific coping responses like helplessness/hopelessness, anxious preoccupation, cognitive avoidance and fatalism were positively related to distress, whereas fighting spirit and perceived social support showed a protective role. Moreover, helplessness/hopelessness and anxious preoccupation jointly predicted 75% of cases and 98% non-cases of distress. Finally, a mediational model between emotional suppression and distress through helplessness/hopelessness was tested. Results support the necessity of routine distress screening all through the illness. Implications of data for psychosocial interventions with breast cancer patients are highlighted.     

A longitudinal study of job loss in relation to the grief process

This study extended a previous assessment of the applicability of the grief process to job-loss, using a longitudinal sample. A sample of 38 unemployed men were interviewed shortly after job loss (t₁), and at four times over the following year (t₂–t₅), using a structured interview, a personal scaling technique [PQRST: Mulhall (1978), Manual for Personal Questionnaire Scaling Technique. NFER], and standard questionnaires of attachment to the former job, anxiety and depression. Of the sample, 24% fulfilled a criterion for a grief-like response at t₁. Factor analysis of the PQRST showed evidence for a general grief factor. A composite grief score from the interview was associated with two measures of job attachment (at t₁), and with questionnaire measures of depression and anxiety at t₁–t₁. There was a gradual decline over time in the grief reaction.     

Parent-adolescent conflict and adolescent antisocial and prosocial behavior: a longitudinal study in a Chinese context

This longitudinal study examined the relationships between parent-adolescent conflict and antisocial and prosocial behavior in Chinese adolescents. Results showed that father-adolescent conflict and mother-adolescent conflict were concurrently related to adolescent antisocial and prosocial behavior. Longitudinal analyses showed that parent-adolescent conflict predicted antisocial behavior but not prosocial behavior. Adolescent antisocial and prosocial behavior was also found to be related to father-adolescent conflict across time. The findings suggest that the linkage between father-adolescent conflict and adolescent social behavior is stronger than that between mother-adolescent conflict and adolescent social behavior.     

Assessment of peer rejection and externalizing behavior problems in preschool boys: a short-term longitudinal study

We examined the longitudinal stability of measures of negative peer status and aggressive-disruptive behavior in preschool boys. Subjects were 53 white 4- to 5- year- old boys from low-income family backgrounds. Peer sociometric measures of rejection and behavioral deviance were assessed in the fall and spring of the preschool year. Complementary measures were also obtained from teachers at both assessment points. Half of the boys designated as rejected on the basis of peer nominations maintained this status at the end of the preschool year. Teachers and peers did not agree on their selections of socially rejected children, but had good agreement concerning the identification of children with externalizing-type behavior problems. Finally, teacher and peer classifications of aggressive-disruptive children were highly stable throughout the preschool year. These findings indicate that peer-rejected children can be identified at very young ages, and that preschoolers can be reliable informants about the social maladjustment of peers.We thank the Head Start children, parents and staff who participated, and Karen Lifgren for her help with data collection.     

The relationships of change in work climate with changes in burnout and depression: a 2-year longitudinal study of Chinese mental health care workers

Mental health care workers face heavy emotional demand and are prone to work burnout. Work burnout has been associated with poor mental health and work climate, which refers to individual perceptions about work setting. The purpose of this study was to examine whether intra-individual changes in work climate were associated with intra-individual changes in burnout and depression over two years. The present sample included Chinese mental health care workers (N = 312; mean age = 38.6, SD = 9.9) working in a psychosocial rehabilitation institution. The participants completed questionnaires on work climate, work burnout and depression at seven time points across two years. Parallel process latent growth modeling was used to analyze the associations of change between work climate and burnout and depression. Work climate displayed a logarithmic decreasing trend while burnout and depression displayed logarithmic increasing trends over two years. Baseline levels of work climate were negatively and moderately associated with baseline levels of burnout and depression (r = ?.44 to ?.60, p < .01). Changes in work climate were negatively and moderately associated with change in burnout (r = ?.43, p < .01) and change in depression (r = ?.31, p < .05). Change in burnout was positively and strongly associated (r = .58, p < .01) with change in depression. The current results support temporal relationships among changes in work climate, burnout and depression across time. Practical implications for future preventive work in burnout interventions were discussed within this population.