Foundations of clinical praxiology part II: Categorical and conjectural diagnoses

The concepts of categorical diagnosis and conjectural diagnosis are introduced. It is argued that in diagnostic reasoning conjectural diagnosis plays a more important role than categorical diagnosis. Attention is called to the inevitable vagueness of clinical language and to the suitability of epistemic logic and fuzzy logic for diagnostic reasoning.     

Perception,illusion, and hallucination

Patrick Suppes' set-theoretical approach to the analysis of theories, and Joseph D. Sneed's metatheory are briefly outlined. The notions of observation, illusion and hallucination are reconstructed according to these approaches. It is argued that the terms ‘perception’ and ‘truth’ are theoretical with respect to observation but nontheoretical with respect to illusion and hallucination. Hallucination is construed as a special kind of illusion.     

Creativity Development of High-Achieving Students

Few studies on creativity have focused on creativity development in various grade levels for high-achieving students. The purpose of this study was to explore the developmental trajectories of creative ability for high-achieving students. The participants constituted a national representative sample of 982 male (N = 506) and female (484) students from grades 1 to 10 in five governorates in Oman (Muscat, South-Al Batinah, South- Al Sharqia, Dhofar, and Al Dhakilia). The students completed two subtests of the Profile of Creative Abilities (PCA), a measure of creative potential, namely drawings and categories. There was an evidence of a developmental trend of creativity across grade levels. The Multi-variate analysis of variance (MANOVA) showed that the main effect of grade was statistically significant for the drawings subtest. Also, the main effect of gender was also statistically significant for the drawings subtest. The main effect of interaction (gender X grade) was not significant. Overall, females’ creative performance was significantly better than males’ in the Creativity Index score. The results of the study are discussed in the light of existing literature about developmental trends and gender differences in creative thinking.     

Normative systems and medical metaethics Part II: Health-maximizing and persons

Two common medical-ethical axions, the health-maximizing axiom and the personhood-respecting axiom, are discussed. On the basis of a philosophical analysis of personhood and freedom of the will it is shown that these two axioms are incompatible. The rejection of the first axiom is suggested.     

The three paradoxes lost a response to Moore and Hutchins

Moore and Hutchin's [1] assertion that the application of classical logic as the method of diagnostic reasoning may result in three paradoxes is critically examined.     

Psychometric Characteristics of the Wish to Be Dead Scale (WDS) in Iranian Psychiatric Outpatients

The Wish to be Dead Scale (WDS) was administered to a convenience sample of 200 Iranian psychiatric outpatients. Using a Principal Component Analysis, two factors were identified, labeled Lack of purpose in life (F1), and Lack of interest in living (F2). The WDS had good reliability and significant positive correlations with scores on the Beck Suicide Ideation Scale and with other measures of mental ill-health. This study provides evidence of the usefulness of the WDS for assessing psychiatric patients.