Possibility of research specific utilization of clinical television setups]

The present study is intended to discuss use of video tape technics in psychiatric research in reference to method, engineering and clinical investigation. A self created variant of a clinical television system is debated. With the support of video tape methods will be realize improvements in quality of psychiatric investigation in view of procedure and determination of the results as well as reliability, objectiveness and exactitude in connection with a postgraduate continued professional training. Reconsiderations of psychiatric documentation systems with regard to reliability represent an other important field of employment.     

Casuistic contribution to the differential diagnosis of the myoclonic syndrome]

Involuntary muscle twitches, which are accompanied by a more or less pronounced effect of motion and which may last for several hours, are a common guiding symptom of a number of neurological syndromes. This paper reports the case of a 24-year-old male who had been suffering since his sixth year from episodic muscular spasms accompanied by attacks of petit mal. These are regarded as representing a myoclonic-epileptic syndrome. In this connection, a distinction has to be made, by differential diagnosis, between the "true" myoclonic syndrome which is characterized by the absence of complications due to attacks of grand mal or petit mal, Kojewnikoff's epilepsy, and the myoclonic-epileptic dementia form of syndrome.     

An economical modification of radial immunodiffusion for the determination of immunoglobulins in the cerebrospinal fluid]

In a total of fifty cerebrospinal fluids, such immunoglobulins as IgG, IgA, and IgM were quantitatively determined in a parallel manner on LC partigen plates and on slides (SEVAC set of means of testing). The comparability of the two methods of test proved excellent with good precision. The sensitivity of IgA determination on slides was made higher, the measurability of all precipitates was improved, and the economic advantage increased by cutting the cost of one determination fifteen times.     

Invariance of odor strength with sniff vigor: an olfactory analogue to size constancy

Previous evidence has shown that detection threshold in humans and olfactory neural discharge rate in animal preparations both depend on flow rate of odorous vapor. But no data have been reported that show the effects of flow rate in humans on perceived odor strength at suprathreshold intensities. Subjects learned to inspire at two flow rates, one twice as great as the other, by adjusting (on a cathode ray tube) the transduced trace of a sniff-produced pressure change to match either of two target contours. They then made magnitude estimations of odor strength, while producing either weak or strong sniffs, for odorants presented over a wide range of concentrations via a specially designed sniff-bottle system. The odorant, diluted in diethyl phthalate, was n-butanol in two experiments and n-amyl acetate in two others. Subject-controlled flow rate had no effect on odor strength for either odorant. There was an apparent contradiction between these data and those on neural discharge rate that may, however, be resolved by adopting an odor constancy model: When sniff intensity varies during the olfactory exploration of an odor source, information about the rate at which odorant molecules are established at the receptor site is combined with information about sniff vigor so that the resulting percept is of invariant odor strength.     

Serious side effects with D-penicillamine therapy for Wilson's disease]

Immunocomplex nephritis as one of the serious side-effects is dealt with on the basis of 41 patients with Wilson's Disease who have been treated for many years and were stabilised on D-penicillinamine. In one quarter of the patients, proteinuria was found 1 to 5 years after the beginning of the therapy. Until now, an immunocomplex nephritis with diffuse granular, mainly epimembranous IgG and C3 deposits on the glomerular basement membran was found in four patients. No circulating antibodies against cell nuclei were found. The finding of immunocomplex nephritis calls for the discontinuation of the therapy for an at present unknown period of time.     

Name ambiguity and androgyny

Subjects with gender-ambiguous names or nicknames (i.e., names that can belong to either males or females) were compared on Bem's androgyny scale to subjects having common or uncommon first names or nicknames to determine if name ambiguity was related to sex-role identification. The results showed that for our sample of college undergraduates (N=489), both males (N=246) and females (N=243) with ambiguous nicknames (e.g., Pat, Tony, Marty) were more often classified as androgynous on the Bem inventory than were subjects with uncommon, common, or no nicknames. Ambiguous first names were unrelated to the androgyny scale. Name and nickname ambiguity were not related to liking of name, self-concept, family tradition, social class differences, or grade point average.A version of this paper was presented at the annual meeting of the Southeastern Psychological Association, Atlanta, March 1978.     

Probabilistic mental models: a Brunswikian theory of confidence

Research on people's confidence in their general knowledge has to date produced two fairly stable effects, many inconsistent results, and no comprehensive theory. We propose such a comprehensive framework, the theory of probabilistic mental models (PMM theory). The theory (a) explains both the overconfidence effect (mean confidence is higher than percentage of answers correct) and the hard-easy effect (overconfidence increases with item difficulty) reported in the literature and (b) predicts conditions under which both effects appear, disappear, or invert. In addition, (c) it predicts a new phenomenon, the confidence-frequency effect, a systematic difference between a judgment of confidence in a single event (i.e., that any given answer is correct) and a judgment of the frequency of correct answers in the long run. Two experiments are reported that support PMM theory by confirming these predictions, and several apparent anomalies reported in the literature are explained and integrated into the present framework.