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Nontuberculous mycobacteria (NTM) are opportunistic human pathogens. Several species of NTM, including members of the Mycobacterium avium complex (MAC), can cause potentially life-threatening pulmonary infections that are difficult to treat [...]

A study involving 36 British children with autism, 21 children with severe learning difficulties, and 54 controls found correlations between false belief and subtractive reasoning tasks; however, results indicate ability in subtractive reasoning was a necessary but not sufficient component of successful performance in the false belief tasks. (Contains references.) (Author/CR)

Reviews the history of professional education in psychology and its two aims: scientific research and professional service. Most students and most employers are interested in only one of these aspects. Basic and applied research and clinical practice are all needed but should not all be performed by the same people. (DM)

Although you may never have thought about it, living on Earth as it soars through empty space shares a very critical characteristic with an astronaut traveling through space on a [...]

Many of Meehl's interests converged in his work on personality assessment. In empirical research, development of the K scale of the Minnesota Multiphasic Personality Inventory and various scales of other tests are noteworthy, but his most profound contributions were conceptual and philosophical. Essays on the role of base rates in clinical decision and on construct validity in psychological tests provided vital insights on core issues in assessment. The concept of nomological nets allowed systematic investigation of unobservable theoretical entities, with liberating effects on all natural sciences. An active clinician, Meehl understood deeply the complexities of professional service, but his insistence on empirical validation as the ultimate arbiter of the value of any procedure required all attainable rigor in the scientific foundations of clinical practice. Keywords: personality assessment, science and practice, philosophy of science

Increasing professionalization of psychology, accelerated by expansion of professional schools, has evoked concern among critics, who claim that many practitioners ignore scientific research and engage in practices that are demonstrably useless or harmful. Recent data on admissions to professional schools and performance of professional school graduates show cause for concerns of the critics. If psychology is to maintain its stature as a profession, exclusionary controls as well as hortatory requirements for the practice of psychology and the education of practitioners must be established and enforced. Before more stringent standards can be imposed, convincing means for evaluating competence in professional work and quality in professional education must be developed. Local and institutional actions to advance those aims are proposed.