Hungarian adolescents' self-concept

Hungarian and United States adolescents' self-image was studied using the Offer Self-Image Questionnaire (OSIQ). In Hungary, 1,163 younger and older male and female adolescents were studied using a Hungarian translation of the OSIQ. Analyses of endorsement patterns of OSIQ items showed that Hungarian and American adolescents endorsed many items in the same way. Similarities in endorsement patterns were much more common between the two countries than were differences. Analyses of OSIQ scales showed that for most scales younger Hungarian adolescents reported better adjustment than younger American adolescents. Differences were not as great or reversed in the older age groups. Implications for cross-cultural studies of adolescent self-image were drawn based on these results.Received M. D. from the Semmelweis Medical university in Budapest. Research interest is complex somato-mental health care of adolescents.Received M. D. from the University of Chicago. Major interests are concepts of mental health and the developmental psychology of adolescence.Director, Forensic Psychology, Michael Reese Hospital and Medical Center. Received J. D. from the University of Chicago School of Law; received Ph. D. in human development from the University of Chicago. Research interests are adolescence and delinquency.Professor of Psychology, Northwestern University. Received Ph. D. in psychology from the University of Chicago. Major interests are psychotherapy research and adolescence.     

Elucidation and chemical identification of a heart strength and heart rate-increasing substance from human kidney extracts

Bioassays involving the measurement of cardioactivity have been used in the past to determine glycoside concentration in post-mortem specimens following glycoside poisoning. This paper describes the presence of a cardioactive principle in alcoholic extracts of kidney that could interfere with these bioassays and which has been identified as tyramine. For the analysis of tyramine a combination of purification methods was employed, including cation exchange with Sephadex CM C-25, gel filtration and HPLC. Detection was achieved using mass spectrometry after careful cation-exchange treatment. The fragmentation pattern with and without prior formation of the TFA-derivative corresponded to that tyramine. IR and UV spectra also indicated the presence of tyramine. Under suitable experimental conditions, positive inotropic and positive chronotropic effects on the right guinea-pig atrium and positive inotropic effect on the left guinea-pig atrium produced by the kidney extract can be shown to differ from those cardiac glycosides. These investigations bring into question earlier court decisions made in legal processes which have been based upon the results of bioassays for the evaluation of cardiac glycoside toxicity.     

Guatemala's Party Universe: A Case Study in Underinstitutionalization

The article examines the degree of institutionalization of the Guatemalan party universe across four areas: the pattern of inter‐party competition; the rootedness of parties in society; the legitimacy accorded to parties and democratic institutions; and the nature of internal party organization. Guatemala displays an extremely inchoate party structure across all these variables. There is no stability in the identity of the main parties in the polity. After more than two decades of electoral democracy, no single party has been able to avert a drift into electoral irrelevance or outright disappearance. With respect to the basic facets of internal party organization, Guatemalan parties exhibit a feebleness so pronounced that their very status as parties is questionable. In general, Guatemalan “parties” only fulfill Sartori's minimalist definition as organizations that field candidates for public office, but offer nothing more substantive.     

Latin America's Neocaudillismo: Ex‐Presidents and Newcomers Running for President… and Winning

Latin Americans have been voting for a surprisingly large number of ex‐presidents and newcomers in presidential elections since the late 1980s. This article looks at both the demand and supply sides of this phenomenon by focusing on economic anxieties and party crises as the key independent variables. Sometimes the relationship between these variables is linear: economic anxieties combined with party crises lead to rising ex‐presidents and newcomers. At other times the relationship is symbiotic: the rise of ex‐presidents leads to party crises, economic and political anxieties, and thus the rise of newcomers. This article concludes that the abundance of ex‐presidents and newcomers in elections—essentially, the new face of Latin America's caudillismo—does not bode well for democracy because it accelerates de‐institutionalization and polarizes the electorate.     

A new perspective in the estimation of postmortem interval (PMI) based on vitreous

The relation between the potassium concentration in the vitreous humor, [K+], and the postmortem interval has been studied by several authors. Many formulae are available and they are based on a correlation test and linear regression using the PMI as the independent variable and [K+] as the dependent variable. The estimation of the confidence interval is based on this formulation. However, in forensic work, it is necessary to use [K+] as the independent variable to estimate the PMI. Although all authors have obtained the PMI by direct use of these formulae, it is, nevertheless, an inexact approach, which leads to false estimations. What is required is to change the variables, obtaining a new equation in which [K+] is considered as the independent variable and the PMI as the dependent. The regression line obtained from our data is [K+] = 5.35 + 0.22 PMI, by changing the variables we get PMI = 2.58[K+] - 9.30. When only nonhospital deaths are considered, the results are considerably improved. In this case, we get [K+] = 5.60 + 0.17 PMI and, consequently, PMI = 3.92[K+] - 19.04.     

Detection of apoptosis in ischemic heart. Usefulness in the diagnosis of early myocardial injury

Myocardial samples of hearts with histologic findings of acute myocardial infarction (group A), sudden coronary deaths without histologic changes (group B), and chronic ischemic heart disease (group C) were analyzed to investigate the appearance of apoptosis in acute and chronic ischemic cardiac disorders. This analysis involved the morphologic detection of DNA strand breaks in myocyte nuclei by the terminal deoxynucleotidyl transferase-mediated dUTP nick-end labeling (TUNEL) assay and the biochemical determination of DNA laddering in the myocardium using archival formalin-fixed, paraffin-embedded tissue sections of human myocardium. The authors demonstrated that apoptosis of myocardial cells could occur after ischemic myocardial cell injury. In all documented cases of acute myocardial infarction (group A), the infarcted area included extensive presence of both apoptosis and necrosis. In the tissue bordering on and away from the obviously infarcted areas, positive nuclei were intermingled with nonstained normal myocytes. The number of positive nuclei decreased with the distance from the infarction foci. In group B, myocardial samples showed focal or diffuse nuclear positivity of varying degrees for apoptosis, confirming the presence of myocardial ischemic cell death, whereas the histologic diagnosis remained inconclusive. This finding suggests that apoptosis could be used as a marker for acute ischemic injury. In group C, stained nuclei were dispersed with intermingled normal cardiomyocytes.