The Developmental Lexicon Project: A behavioral database to investigate visual word recognition across the lifespan

With the Developmental Lexicon Project (DeveL), we present a large-scale study that was conducted to collect data on visual word recognition in German across the lifespan. A total of 800 children from Grades 1 to 6, as well as two groups of younger and older adults, participated in the study and completed a lexical decision and a naming task. We provide a database for 1,152 German words, comprising behavioral data from seven different stages of reading development, along with sublexical and lexical characteristics for all stimuli. The present article describes our motivation for this project, explains the methods we used to collect the data, and reports analyses on the reliability of our results. In addition, we explored developmental changes in three marker effects in psycholinguistic research: word length, word frequency, and orthographic similarity. The database is available online.     

Parallel sexual relationships in the Norwegian context

The purpose of the paper is to describe and analyse the prevalence of parallel sexual relationships among adult Norwegians in terms of social background variables, possibility factors and motivational factors. Data stem from two cross-sectional, postal questionnaire surveys in 1987 and 1992 on two separate representative samples of 10,000 Norwegians aged between 18 and 60. The results showed that 16% of the respondents reported one or more parallel sexual relationships. The prevalence of parallel sexual relationships increased with possibility factors, such as the number of travelling days and population density. Among motivational factors, parallel sexual relationships increased with the number of years married/cohabiting, except for those married the longest. It decreased with increasing age of first intercourse, and increased with the number of partners before the last partnership. Of those not satisfied with coital frequency with their permanent partner, 22% had parallel sexual relationship experience compared to 12% among those who were satisfied. Furthermore, more men than women reported parallel sexual relationships; respondents with higher levels of education more often reported parallel sexual activity than those with lower level of education; and subjects born between 1937 and 1956 reported more parallel sexual activity than the other cohorts. When controlled for the number of years married/cohabiting, the predicted trend suggests that for the cohorts born up to 1970, men and women with lower and higher levels of education have become more similar as regards parallel sexual behaviour. © 1998 John Wiley & Sons, Ltd.     

Verification of nonwords: The baseword frequency effect in children’s pseudohomophone reading

Psychonomic Bulletin & Review - In this study, we investigated the baseword frequency effect in children and its implications for models of visual word recognition. The baseword frequency...     

Original and cumulative prospect theory: a discussion of empirical differences

This paper discusses differences between prospect theory and cumulative prospect theory. It shows that cumulative prospect theory is not merely a formal correction of some theoretical problems in prospect theory, but it also gives different predictions. Some experiments by Lola Lopes are re-analyzed, and are demonstrated to favor cumulative prospect theory over prospect theory. It turns out that the mathematical form of cumulative prospect theory is well suited for modeling the psychological phenomenon of diminishing sensitivity. © 1997 John Wiley & Sons, Ltd.     

Varieties of Religious Experience:Continuity and Change in Religious Involvement

ABSTRACT The intent of the present study was to determine whether the selective aggregation of background data subgroups could be used to identify and control for differences across persons in the meaning of religious involvement. After background data subgroups had been clustered based on similarity in the variables related to religious involvement, two clusters were identified. One cluster contained individuals whose religious involvement was characterized by a functional, instrumental orientation, while the other was composed of individuals whose religious involvement was characterized by an affective, expressive orientation. Subsequently, causal models intended to describe continuity and change in religious involvement were constructed using individuals assigned to each cluster. It was found that different models were required to describe continuity and change in religious involvement in the instrumental and expressive clusters.     

Understanding the flexibility of action–perception coupling

The idea that observing an action triggers an automatic and obligatory activation of an imitative action in the motor system of the observer has recently been questioned by studies examining complementary actions. Instead of a tendency for imitation, cooperative settings may facilitate the execution of dissimilar actions, resulting in a relative disadvantage for imitative actions. The present study aimed at clarifying the contribution of associative learning and interference of task representations to the reversal of congruency effects. To distinguish between the two, an experiment was designed, in which we increased the effects of associative learning and minimized the effects of task interference. Participants completed a series of imitation and complementary action runs, in which they continuously imitated or complemented the actions of a virtual co-actor. Each run was alternated with a test run showing the same actions but including color-cues, and the participants were instructed to respond to color instead of the actor’s posture. Reaction times to test runs showed no reversal of facilitation effects between the imitation and complementary action conditions. This result strongly argues that associative learning cannot adequately account for reversed facilitation effects. Our study provides additional support for action–perception models that allow flexible selection of action–perception coupling and challenges the existing models purely based on stimulus–response associations.

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Incompleteness and harm avoidance in OCD symptom dimensions

Incompleteness (INC) and harm avoidance (HA) are motivational core dimensions of OCD. While HA-related concepts (e.g., inflated responsibility, overestimation of threat) are a main focus of current cognitive-behavioural OCD research, there is also a renewed interest in INC feelings and "not just right experiences" with an inability to achieve "closure" concerning actions/perceptions. This study systematically examines the association of OCD symptom dimensions with INC and HA in a large clinical OCD sample (n=202). Hierarchical linear multiple regression analyses controlling for anxiety, depression and symptom severity demonstrated a unique association of symmetry/ordering and checking (but not of contamination/washing and obsessional thoughts) with INC, and of obsessional thoughts and checking with HA. Thus, in contrast with symmetry/ordering (predominantly INC-related) and obsessional thoughts (predominantly HA-related), checking was motivationally heterogeneous, i.e., associated with INC and HA to a comparable and substantial degree. Contamination/washing failed to show a unique association with HA in two of three analyses, and with INC in all three analyses. Symptom severity uniquely contributed to INC in two of three analyses, but not to HA. Clinically, our results indicate that a conceptualization of OCD as an anxiety disorder is too narrow.