Goodness-of-fit tests in semi-linear models

Specification tests for the error distribution are proposed in semi-linear models, including the partial linear model and additive models. The tests utilize an integrated distance involving the empirical characteristic function of properly estimated residuals. These residuals are obtained from an initial estimation step involving a combination of penalized least squares and smoothing techniques. A bootstrap version of the tests is utilized in order to study the small sample behavior of the procedures in comparison with more classical approaches. As an example, the tests are applied on some real data sets.     

Return predictability and social dynamics

The ability to predict stock returns from financial ratios is a long-standing but still controversial topic. There is ongoing debate about the empirical evidence as well as about appropriate theoretical explanations. We provide evidence from a simulated economy that local, social interaction among agents is remarkably successful in matching several established empirical facts. We find significant return predictability at various forecast horizons, absence of dividend growth predictability, high persistence in dividend yields, and absence of significant return autocorrelations. Our results suggest that social dynamics are a simple, intuitively appealing and successful way to explain predictability.     

Women's Critical Responses to Sexually Explicit Material: The Role of Hyperfemininity and Processing Style

Previous research on women's responses to male-targeted sexually explicit material (SEM) suggests that women may be critical toward such content. However, women's critical responses to SEM have not been explained empirically. The present study had two goals: (1) to investigate whether women's critical responses to male-targeted SEM depend on individual differences in gender role orientation (i.e., hyperfemininity) and (2) to explain the effect of hyperfemininity on critical responses to SEM by looking at the way sexual material is processed. In an online experiment among women aged 18 to 30 (N = 195), both the type of SEM (a male- versus female-targeted erotic story) and processing style (stimulus- versus response-focused) were manipulated. In addition, participants were divided into three groups based on low, moderate, or high hyperfemininity. When using stimulus-focused processing (i.e., attending to the characters and situational context of the story), women were more critical toward male-targeted SEM (relative to female-targeted material), but only when they had low and moderate degrees of hyperfemininity.     

A Cross-Cultural Content-Analytic Comparison of the Hookup Culture in U.S. and Dutch Teen Girl Magazines

This quantitative content analysis investigated the hookup culture in U.S. and Dutch teen girl magazines. Using Hofstede's cultural dimension of masculinity/femininity, the hookup culture (i.e., the relational context of sex, emotional context of sex, specific sexual activities, and contraceptives) was examined in 2,496 stories from all 2006 through 2008 issues of the three most popular U.S. (i.e., Seventeen, CosmoGirl! U.S. edition, and Teen) and Dutch teen girl magazines (i.e., Fancy, CosmoGirl! Netherlands edition, and Girlz!). Regarding the relational context of sex, stories about casual sex occurred more often in U.S. magazines, and Dutch magazines focused more on committed sex. Dutch magazines also emphasized sex within the emotional context of love more often than did U.S. magazines. In terms of sexual activities, coital sex was mentioned more often in U.S. coverage, while petting was mentioned more frequently in Dutch coverage. Condoms were covered more positively in U.S. magazines than in Dutch magazines. Overall, the hookup culture seems to be more visible in U.S. magazines for the occurrence of casual sex and lack of love stories, whereas it does not emerge in Dutch magazines due to the presence of committed sex and love-related articles.     

Therapy with male pathological gamblers: Between self help group and group therapy—Report of a developmental process

A therapy project was developed for pathological gambling patients and, within a three year period, more than 60 gamblers were studied and treated. Diagnostic evaluation was made according to DSM-III. In addition to individual and family therapy, we designed a voluntary group setting. In this report, we concentrate first on the development of group work, then on some psychodynamic hypotheses about the personality of the gambler. We also try to show the correspondence between these hypotheses and the group process. Pathological gambling is seen as an attempt at self-healing and a strategy of conflict-solving; the slot machine, as an inanimate object, offers a temporary symbiosis with clear limitations; the gambling will come to a guaranteed end, either when all of the money is lost, or when gaming ends at night. Finally, we list some recommendations for the treatment of gamblers in group therapy.This research was supported by the Ärztliche Psychologische Beratungsstelle für Studierende der Universität Göttingen, Chairman: Prof. E. Sperling, M.D.Since one author (J.H.) worked alone in the first period of the project, passages referring to this period are written in the first person singular.This article is an extension of the special issue on Gambling in Europe edited by Iver Hand, M.D.     

A comparative study of equity judgements in Lithuania and Norway

A questionnaire-type experiment was conducted in Lithuania and Norway in order to generate two samples suitable for a comparative examination of equity judgements.The results reveal large differences between the two countries. Norwegian probants had a much higher propensity to decide in accordance with Rawls’ second principle than had Lithuanian probants. Equity judgements are also strongly dependent on the context of choice. The results are interpreted within a framework describing the formation of social preferences. More specifically, differences in observed equity judgements in the two countries are related to differences in history, past experience and future prospects.     

Erwiderung zu den Anmerkungen von Udo Terstege zum Beitrag „Die Haftung des Wirtschaftsprüfers am Primär-und am Sekundärmarkt — eine rechtsökonomische Analyse“

Insgesamt sind die Anmerkungen von Terstege wenig stichhaltig. Der erste Kritikpunkt ist in seinem Kern unzutreffend. Dennoch kommt Terstege zur gleichen Aussage, dass nicht der volle schaden der gesch?digten Massstab für das Design von haftungsregeln für Wirtschaftsprüfer sein sollte. Der zweite Kritikpunkt ist technisch korrekt, ?ndert aber nichts an den ?konomischen Aussagen unseres Beitrags. Die Berücksichtigung dieses Kritikpunkts in unserem Artikel würde das Modell deutlich verkomplizieren, aber zu keinen anderen Aussagen führen. Die grundthese unseres Papiers, dass die haftung für Wirtschaftsprüfer an Prim?rm?rkten sch?rfer als an sekund?rm?rkten sein sollte, wird überhaupt nicht aufgegriffen. Auch werden unsere Vorschl?ge zur Korrektur einer eventuellen überabschreckung am sekund?rmarkt (siehe Bigus/Sch?fer, 2007, s. 29–36) nicht diskutiert.     

Fehlermultiplikation und Pfadabhängigkeit

Secondary analyses, i.e. analyses of data which were not collected for this purpose and/or not by these people, are widely used due to their outstanding advantages. However, their methodological implications are seldom discussed. The widespread secondary use of few data sets has implications for the published knowledge base of the discipline. Known and unknown biases and random error in a particular data set are multiplied in published knowledge. The realm of undetected errors increases if data producer and data user are separated. Furthermore available data sets limit the possibility of introducing new concepts resulting in a path dependency of scientific progress. Consequently, primary data should be valued; using only partly appropriate data sets can improve and validate our knowledge; data sets have to be considered in literature reviews; and indirect measurement or additional macro variables may be used to integrate unconventional concepts. User conferences help closing the gap between data producers and users.