Using and interpreting analogue designs

Researchers in rehabilitation counseling and disability studies sometimes use analogue research, which involves materials that approximate or describe reality (e.g., written vignettes, videotaped exemplars) rather than investigating phenomena in real-world settings. Analogue research often utilizes experimental designs, and it thereby frequently possesses a high degree of internal validity. Analogue research allows investigators to exercise tight control over the implementation of the independent or treatment variable and over potentially confounding variables, which enables them to isolate the effects of those treatment variables on selected outcome measures. However, the simulated nature of analogue research presents an important threat to external validity. As such, the generalizability of analogue research to real-life settings and situations may be problematic. These and other issues germane to analogue research in vocational rehabilitation are discussed in this article, illustrated with examples from the contemporary literature.     

Evaluating the Effective Degrees of Freedom of the Delete-a-Group Jackknife

The delete-a-group jackknife is sometimes used when estimating the variances of statistics based on a large sample. We investigate heavily poststratified estimators for a population mean and a simple regression coefficient, where both full-sample and domain estimates are of interest. The delete-a-group (DAG) jackknife employing 30, 60, and 100 replicates is found to be highly unstable, even for large sample sizes. The empirical degrees of freedom of these DAG jackknives are usually much less than their nominal degrees of freedom. This analysis calls into question whether coverage intervals derived from replication-based variance estimators can be trusted for highly calibrated estimates.     

More social than capital: Social capital accumulation through social network exchange among legal and unauthorized Mexican migrants

Social capital is frequently used to explain many policy related outcomes, but research has not adequately explained how it is accumulated. It is unclear whether the economic or social characteristics of others in a social network motivate social capital accumulation. This lack of understanding has called some to question social capital's efficacy. Employing data from a survey of randomly selected foreign-born Mexicans in Los Angeles County, the influence of social and economic characteristics of a migrant's social network members are estimated. Results suggest a negative association with social capital accumulation for Mexican migrants with a social network member outside their neighborhood. Having married social network members is positively associated for legal Mexicans, while having network members who work in occupations requiring more social skills is positively associated for unauthorized Mexicans accumulating social capital. Measures of human and financial capital are not associated with the probability of developing social capital.     

Case Management for Community Practice

This article concerns an approach to supervision for statutory youth casework. The model involves caseworkers recording a video of their meetings with their clients and sending it to an external supervisor. The supervisor selects video clips. They then hold an online meeting where they review the clips, and the supervisor gives feedback based on a standardized model. The caseworker then uses the feedback in their future practice and the cycle is repeated. 16 statutory youth caseworkers and 6 supervisors from three municipalities in Denmark participated in semi-structured interviews regarding their experiences with the video supervision and feedback model. The interviews focused on facilitating and inhibiting factors with regard to the use of the model. A thematic analysis was conducted. Communication regarding the law, giving clients space to find their voice, and paying heed to how each relationship was progressing were emphasized as central focus points. Advice had to be concrete and achievable and come from supervisors with statutory experience. Participants highlighted the significance of viewing practice directly via video footage. Film clips used for feedback needed to be short and well chosen. The technology, logistics and infrastructure, including management support, were important. Findings were used to develop the model.     

Residency differentials in Mormon fertility

Although one of the most consistent findings of recent fertility studies is the convergence of the religious differentials in fertility, few data have been analysed to discover Mormon fertility trends and differentials. This paper, based on data obtained on 1,001 Mormon couples, is concerned with describing the effects that the dispersion of Mormon families from the Mormon centre in Utah to surrounding areas with various social conditions is having on the fertility of the re-located Mormon families. Data presented clearly show that such families do, on the average, have a lower fertility than do their Mormon contemporaries residing in the homogeneous Mormon society in Utah. They probably compromise their religious obligations to have children with the contradicting demands of their new environment. Their loyalty to these religious beliefs, however, is confirmed by data which show that they tend to have larger families in their new environments than do their non-Mormon neighbours.     

Aging,Depression, and Wisdom: A Pilot Study of Life-Review Intervention and PTSD Treatment With Two Groups of Vietnam Veterans

Vietnam War veterans are a sometimes overlooked subgroup of the aging baby boomer generation. Forty years after the war ended, war veterans still seek out VA or Vet Center counselors to assist with traumatic stress symptoms. However, there currently are no specific age-related protocols for treating older war veterans suffering from posttraumatic stress disorder (PTSD), nor have established PTSD interventions incorporated gerontology content for these older trauma survivors. This pilot study juxtaposed life review within regular PTSD group counseling for 12 Vietnam veterans at a community-based Vet Center using a partial crossover design. The Life Review and Experiencing Form (LREF) structured the delivery of the life review component. T-tests and repeated measures ANOVA were used to examine depression and self-assessed wisdom outcomes using measures previously tested with older adults. Findings suggest that life review prior to PTSD group therapy has clinical benefits for reducing symptoms of depression and increasing self-assessed wisdom. The study illuminates the possible relationship of traumatic stress symptom effects on the natural reminiscing process for older veterans and provides insights into methods for more age-appropriate treatment for trauma survivors participating in Vet Center and VA programs nationwide.     

Development of a carpal tunnel syndrome screening method using structured interviews and vibrotactile testing

Carpal tunnel syndrome (CTS) is a debilitating and expensive health problem. An inexpensive screening method that would differentiate between people who do not have CTS and those that may have CTS would be useful. The screening methodology investigated here had two phases: a structured interview and provocative vibrotactile testing (VT). The control group (n = 36) was composed of asymptomatic college students and faculty, the case group was composed of patients currently visiting an occupational medicine clinic for symptoms consistent with CTS. The case group was subdivided into positive and negative for nerve conduction latency, NCL+ (n = 21) and NCL- (n = 13), respectively. Using a scored, structured interview, 33 of the controls and none of the symptomatic cases were identified as non-CTS. The results from the provocative flexion VT indicated that if the difference between the age corrected baseline and the threshold at 15 minutes is 15 microm or more, the subject was likely to be NCL+ (odds ratio 12.6, 95% CI 3.8 to 41.8). Further research may improve this screening methodology to not only determine whether or not a person has CTS, but also to determine the level of median nerve impingement or damage.