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Biomedical subjects

M G Haviland

Publications and source records attributed to M G Haviland.

At least 19 recordsLinked to original sources

Psychometric properties of the Observer Alexithymia Scale in a clinical sample.

The purpose of this study was to evaluate the psychometric properties of the Observer Alexithymia Scale (OAS; Haviland, Warren, & Riggs, 2000) in a clinical setting. Clinical and counseling psychologists used the OAS to rate outpatients (n = 192) with various Diagnostic and Statistical Manual of Mental Disorders (American Psychiatric Association, 1994) diagnoses. Reliability and validity data are similar to the initial nonclinical data (n = 819): OAS scores are reliable (coefficient alpha = .90), and the five-factor structure--Distant, Uninsightful, Somatizing, Humorless, and Rigid--was confirmed. Moreover, the OAS does a relatively good job of differentiating clinical from nonclinical cases. The OAS is psychometrically sound, and it appears to be a useful tool for collecting and evaluating observer data on the clinically relevant, everyday expressions of alexithymia.

Affective Symptoms↗

Handedness and sex differences in intelligence: evidence from the medical college admission test.

Our analysis of Medical College Admission Test subtest scores by writing hand preference and sex suggests that (a) right hemispheric dominance is associated with intellectual giftedness in verbal reasoning (left-handers obtained higher scores on the verbal reasoning test and were overrepresented in the upper tail of the distribution), (b) different patterns of brain lateralization are associated with different subcomponents of cognition (right-handers scored higher, on average, on the writing test and were overrepresented in the upper tail of the distribution), and (c) men generally score higher than women on tests of scientific knowledge (the most striking differences between men and women were on the biological and physical science tests).

Adult↗

Psychiatrist and nonphysician mental health provider staffing levels in health maintenance organizations.

OBJECTIVE: This study attempts to determine the ratio of full-time-equivalent psychiatrists to members and that of nonphysician mental health professionals to psychiatrists in staff and group model health maintenance organizations (HMOs), and to compare the psychiatrist-to-member ratio with previous estimates of the required psychiatrist-to-population ratios in fee-for-service and managed care environments. METHODS: The Group Health Association of America (now the American Association of Health Plans) collected data on mental health staffing, enrollments, and other characteristics for 30 staff and group model HMOs. The authors evaluated the number of full-time-equivalent psychiatrists and nonphysician mental health professionals per 100,000 HMO members, and the ratio of full-time-equivalent nonphysician mental health professionals to psychiatrists. RESULTS: The overall mean number of full-time-equivalent psychiatrists and nonphysician mental health professionals per 100,000 members in the responding HMOs was 6.8 and 22.9, respectively. The overall mean ratio of nonphysician professionals to psychiatrists was 4.5. The overall number of psychiatrists per 100,000 members is less than half the requirement estimated by the Graduate Medical Education National Advisory Committee in 1980, which assumed a fee-for-service environment, but it is about 40% to 80% greater than that estimated by other studies under the assumption of a managed care environment. CONCLUSIONS: Although a practice environment dominated by managed care may not require as high a psychiatrist-to-population ratio as a predominantly fee-for-service environment, it may well support a greater number of psychiatrists than previous studies have suggested.

Career Choice↗

A California Q-set alexithymia prototype and its relationship to ego-control and ego-resiliency.

The primary purposes of the present study were to use the Q-sort method to develop a measure of alexithymia and to locate the construct within a two-dimensional (ego-control and ego-resiliency) model of personality. Thirteen professional judges described the characteristics of the alexithymic personality with the 100-item California Q-set. Scores from the sorts were aggregated to form the Alexithymia Prototype, which had a Spearman-Brown reliability of 0.99. Alexithymic people were described as having difficulties experiencing and expressing emotion, lacking imagination, and being literal, socially conforming, and utilitarian; they lack insight, are humorless, and experience meaninglessness; and anxiety and tension find outlet in bodily symptoms. This description is consistent, for the most part, with modern formulations of the alexithymia construct. In the language of the two-dimensional personality model, alexithymic individuals appear to be overcontrolling and lacking ego-resiliency (i.e., constricted, anxious, rigid, and withdrawn). We, therefore, compared the Alexithymia Prototype with two independently developed prototypes, Overcontrol and Ego-Resiliency. The Q-correlations between alexithymia and overcontrol and between alexithymia and ego-resiliency were 0.45 and -0.70, respectively. Although item analyses confirmed moderate overlap between alexithymia and overcontrol and considerable overlap between alexithymia and lacking ego-resiliency (ego-brittle), item differences suggest that alexithymia, indeed, is a unique personality construct.

Adaptation, Psychological↗

Structure of the twenty-item Toronto Alexithymia Scale.

The 20-item Toronto Alexithymia Scale (TAS-20) purportedly measures 3 intercorrelated dimensions of the alexithymia construct: (a) difficulties identifying feelings (DIF), (b) difficulties describing feelings (DDF), and (c) externally oriented thinking (EOT). The primary purpose of this study was to evaluate the factor structure of the TAS-20 with full-information item factor analysis in 2 diverse samples: medical students (n = 219) and psychiatric (psychoactive substance dependent-abusing) inpatients (n = 204). In each group, we estimated the parameters of 1-, 2-, 3-, and 4-factor models. None of the various factor solutions resulted in clean, simple structures in either sample. In the student sample, the data were best represented (although not well) by a 3-dimensional model: DIF, DDF, and EOT. In the psychiatric sample, however, the 3-dimensional solution was quite different; DIF and DDF formed 1 "emotional awareness deficits" factor, and EOT split into 2 unrelated factors. We concluded that alexithymia, as measured by the TAS-20, is multidimensional and not well-represented by a global severity score. Our recommendations include checking the factor structure of the TAS-20 when practicable, computing subscale scores, and exercising caution in interpreting TAS-20 EOT scores, particularly in psychoactive substance dependent-abusing inpatient samples.

Adolescent↗

Preparing for health care reform and an LCME site visit: addressing the generalist-non-generalist imbalance.

PURPOSE: The purpose of the present study was to evaluate primary care outcomes for the Loma Linda University School of Medicine (LLUSM), using Association of American Medical Colleges (AAMC) data files. The two principal objectives were to estimate the percentages of LLUSM graduates who are practicing or will practice primary care medicine and to determine what information available on application to LLUSM is useful in predicting graduates' specialty choices (i.e., primary versus non-primary care). METHOD: In 1993-94 data were taken from several AAMC data files (available to all medical schools), including the Graduate Medical Education (GME) Tracking Census and the American Medical College Application Service (AMCAS) Applicant Master File. The second and fourth years after graduation were used as points of evaluation. Primary care (generalist) was defined as taking or having completed a residency in family practice, internal medicine, or pediatrics, and not having taken any fellowship training. RESULTS: Fourth year after graduation: 42.4% of the 1,064 LLUSM graduates (1983 to 1990) were training in or had completed residencies in family practice (19.8%), internal medicine (16.2%), or pediatrics (6.4%). Second year of GME: of the 1,365 LLUSM graduates (1983 to 1992), 49.3% were in the primary care pipeline (19.8% in family practice, 21.9% in internal medicine, and 7.6% in pediatrics). Two variables available on admission to medical school were associated with being in the primary care pipeline (second-year GME generalist): being a woman and being a member of a non-underrepresented minority. One variable was associated with being in the non-primary care pipeline: having a rural county code. Undergraduate grades and Medical College Admission Test scores were not good predictors. CONCLUSION: The AAMC data files, available to all medical schools, are useful for estimating and evaluating primary care outcomes.

Career Choice↗

Beyond posttraumatic stress disorder: object relations and reality testing disturbances in physically and sexually abused adolescents.

OBJECTIVE: To evaluate posttraumatic stress disorder (PTSD) symptom severity, object (interpersonal) relations disturbances, and reality testing disturbances in a sample of physically and sexually abused adolescents. METHOD: Subjects were 37 students, 16 boys and 21 girls, enrolled at a private, residential school for children with various conduct problems. Students completed several psychological tests, including the Child Post-Traumatic Stress Disorder Reaction Index (CPTSD-RI) and the Bell Object Relations and Reality Testing Inventory. RESULTS: Of the 37 students, 22 (59.5%) had CPTSD-RI scores in the severe and the very severe ranges. The most common object relations and reality testing disturbances were insecure attachment and uncertainty of perception, respectively. CPTSD-RI scores were positively correlated with two of the four object relations scores (insecure attachment and egocentricity) and with all three reality testing scores (reality distortion, uncertainty of perception, and hallucinations/delusions). Mean CPTSD-RI scores were higher for students whose abuse had involved sex (sexual and physical abuse, sexual abuse only) than they were for students whose abuse had been physical only. Alienation and social incompetence, the two object relations disturbances not correlated with PTSD symptom severity, were associated with having experienced abuse at an early age and having been abused by a parent or stepparent (versus a nonparent). CONCLUSION: To address more effectively the long-term difficulties associated with child maltreatment, clinicians and clinician-investigators ought to evaluate interpersonal and reality testing disturbances, as well as PTSD symptom severity.

Adolescent↗

The relationship of postdoctoral research training to current research activities of faculty in academic departments of psychiatry.

OBJECTIVE: This report describes the postdoctoral research training of faculty in departments of psychiatry and relates research training characteristics to current involvement in research. METHOD: Data were taken from a survey of 3,107 doctoral-level faculty in departments of psychiatry at 116 U.S. medical schools. The survey instrument gathered information about faculty members' postdoctoral research training and current research activities and elicited recommendations for research training programs. RESULTS: Of the survey respondents, 34.8% had had some form of postdoctoral research training. Most of those had trained in medical schools or intramural programs of the National Institutes of Health and federal institutes on alcoholism, drug abuse, and mental health. Most funding came from the federal government. Postdoctoral research training was significantly related to greater current research involvement across all degree types--M.D., Ph.D., and M.D.-Ph.D. Length of training was related to level of research involvement for M.D.s and Ph.D.s but not M.D.-Ph.D.s. Although most researchers believed their training programs prepared them for independent research, a smaller proportion of M.D.s than M.D.-Ph.D.s or Ph.D.s responded affirmatively to that question. Researchers were more likely than nonresearchers to consider their training adequate. Respondents rated time with mentor, course work in statistics, and length of training as the most important training program features. Both research training and research activities were concentrated in a relatively few institutions. CONCLUSIONS: These data show the critical importance of both federal support of research training and postdoctoral research training for subsequent research involvement of psychiatric faculty.

Attitude of Health Personnel↗

Research activities of full-time faculty in academic departments of psychiatry.

Using data collected by a 1989 American Psychiatric Association survey of full-time, salaried faculty in departments of psychiatry at US medical schools, we examined the number of faculty engaged in research, their levels of involvement in research, distribution, sources of funding, fields and topics studied, and training. Using a three-level measure of research involvement, we categorized 39.1% of the respondents as "researchers," 36% as "limited commitment researchers," and 25.1% as not involved in research. In a pattern similar to that observed for research funding in other studies, half of the researchers were concentrated in the top 15 of the 116 responding departments. Level of research involvement varied by degree type (joint-program MD/PhDs were most involved), sources of funding, fields, and topics. Among faculty with MDs, having had research experiences in medical school or postdoctoral research training was associated with a higher level of research involvement. The findings underscore the need to expand and improve postdoctoral research training--especially for MDs--and programs to recruit college and medical students into psychiatric research.

Faculty, Medical↗

Sex differences in rank attainment and research activities among academic psychiatrists.

Data from a survey distributed to all full-time faculty in academic departments of psychiatry were used to examine possible sex differences in research activities and rank attainment among psychiatrists. A total of 1923 psychiatrists responded, 1564 men (81.3%) and 359 women (18.7%). Continuous dependent variables were analyzed by using analyses of covariance with the year graduated from medical school as a covariate. For categorical dependent variables, the sample was divided into four 10-year cohorts based on the year graduated from medical school, and differences between men and women were analyzed with chi 2 tests. Over the entire sample, men were more likely than women to have had research training, to have ever been principal investigators on peer-reviewed grants, to mentor research trainees, to be currently involved in research activities, and to meet defined criteria as a "researcher." Many gender differences remained significant after controlling for seniority and research training. In every cohort, the men had attained higher academic rank than the women. In general, differences in research activity and productivity were most marked in the youngest cohort. To ensure a rich talent pool for psychiatric research, efforts must be made to recruit and support researchers from among the increased number of women in psychiatry.

Age Distribution↗

Assessing the severity of depressive states in recently detoxified alcoholics.

The problem of how to assess "unbiased" symptoms of depression meaningfully in the context of alcoholism bedevils studies of concomitant alcoholism and affective disorder. This study summarizes this controversy and discusses its implications for developing improved measures of depression severity among alcoholics. The Beck Depression Inventory (BDI) responses of 130 alcoholic applicants applying for inpatient care were evaluated using a two-parameter normal item response model. This study demonstrates that a single dimension of depression severity accounts for patient responses well, but that seven BDI items were relatively poor markers of syndrome severity for these alcoholics. The study documents growing consensus among investigators as to which BDI items constitute a fair scale of depression severity among alcoholic patients The availability of "unbiased criteria" for assessing the severity of depression among alcoholics applying for inpatient treatment will enable investigators and clinicians to recognize patients with concomitant alcoholism and affective disorder for special attention and/or treatment. The modified BDI scale proposed here is a candidate for a clinical definition of depression severity among alcoholic patients by virtue of this study's demonstration that it defines a distinct syndrome in this patient sample; but the modified scale must undergo independent tests of validity before its clinical utility can be established.

Adult↗

A prospective clinical evaluation of an equation to predict daily lithium dose.

BACKGROUND: Conclusions about the usefulness of lithium dose-prediction equations are often based on retrospective evaluations, and the paucity of prospective tests is striking. METHOD: We prospectively evaluated the safety and accuracy of a lithium-dose prediction equation in a group of 29 psychiatric patients. Predicted doses were computed and rounded to the nearest multiple of 300 mg, and the respective doses of lithium carbonate were given either two or three times a day. On Day 4 or 5 following treatment initiation, morning blood samples were collected 8 to 12 hours after administration of the last dose. Patients were monitored carefully for signs of lithium toxicity. RESULTS: All 29 subjects achieved lithium concentrations between 0.5 and 1.3 mmol/L within 5 days of beginning treatment, and no participant showed any signs of lithium toxicity. CONCLUSION: The equation may be a safe, reasonable alternative to empiric dosing.

Adult↗

Thyroid stimulating hormone and prolactin responses to thyrotropin releasing hormone in nondepressed alcoholic inpatients.

Thyroid stimulating hormone (TSH) and prolactin (PRL) responses to thyrotropin releasing hormone (TRH) stimulation are sometimes blunted in alcoholic subjects; however, the mechanisms involved in these phenomena have not been established. We hypothesized that elevations in free thyroid concentrations might be related to these abnormal responses and then tested that hypothesis in a sample of nondepressed alcoholic inpatients (n = 21). Four alcoholic patients had delta max TSH responses that were < 7 mIU/l; three had PRL responses at or below 8 micrograms/l. Baseline TSH was the only significant predictor of peak TSH; however, free thyroxine (FT4) and baseline TSH both were significant predictors of peak PRL. The average baseline FT4 concentration in alcoholic patients was significantly higher than that in healthy control subjects (n = 10). Our data, thus, suggest that small elevations of FT4 play a role in the inhibition of TSH and PRL responses to TRH among nondepressed, abstinent alcoholic patients.

Adult↗

An application of item response theory to alexithymia assessment among abstinent alcoholics.

An item response theory (IRT) model identified three dimensions assessed by the Toronto Alexithymia Scale (TAS) in a sample of 130 male applicants for inpatient care at a Veterans Administration (VA) medical center alcoholism treatment program. A unidimensional solution did not capture all of alexithymia's theoretical features. Subjects with lower alexithymia scores gave positive responses to items tapping emotional awareness deficits; only those with higher alexithymia scores gave positive responses to items tapping external, operative cognitive style. Thus, a total TAS score may not represent alexithymia accurately in substance-abusing patient populations.

Adult↗