An identifiable model of two-stage learning

An eleven-parameter model for two-stage learning is developed. The model's principal advantage over extant two-stage models is that its parameter space is completely identifiable, thereby eliminating the tedious procedure of locating acceptable identifying restrictions. Identifiability is achieved by defining the model over a slightly modified outcome space. Following the identifiability proof, the necessary statistical machinery for parameter estimation, goodness-of-fit analyses, and hypothesis testing is presented. These latter developments are illustrated with data from an adult cued recall experiment and a free recall experiment with elementary school children.     

Some studies on the internal structure of propositions

Summary Five experiments were carried out to test the information processing of the propositional arguments instrument and beneficiary. Proceeding from the assumption that propositions are basic units of memory, it was hypothesized that instrument and beneficiary would show different effects in recall experiments, depending on whether they were components of appropriate propositions or not. Experiments I and II were conducted to test this assumption. The results showed that things are more complicated than was expected. Besides propositional structure, the semantic integration of concrete propositions has to be taken into account to predict their psychological processing. Experiments III, IV, and V were conducted to prove this. On the whole, it was found that instruments can always be considered as arguments but beneficiaries only when they are obligatory; and further that in general instrument arguments are semantically more strongly implied by their predicates than beneficiary arguments are.I would like to thank Trevor Scott for his help in writing the English text. Requests for offprints should be sent to Johannes Engelkamp, Psychologisches Institut, Universität des Saarlandes, D-6600 Saarbrücken, Federal Republic of Germany     

A person-oriented approach to hand hygiene behaviour: Emotional empathy fosters hand hygiene practice

Objectives: Adopting a social-psychological approach, this research examines whether emotional empathy, an affective reaction regarding another’s well-being, fosters hand hygiene as this affects other’s health-related well-being extensively.

Design: Three studies tested this notion: (a) a cross-sectional study involving a sample of health care workers at a German hospital, (b) an experiment testing the causal effect of empathy on hand hygiene behaviour and (c) an 11-week prospective study testing whether an empathy induction affected disinfectant usage frequency in two different wards of a hospital.

Main outcome measures: Self-reported hand hygiene behaviour based on day reconstruction method was measured in Study 1, actual hand sanitation behaviour was observed in Study 2 and disinfectant usage frequency in two different hospital wards was assessed in Study 3.

Results: Study 1 reveals an association of empathy with hand hygiene cross-sectionally, Study 2 documents the causal effect of empathy on increased hand sanitation. Study 3 shows an empathy induction increases hand sanitiser usage in the hospital.

Conclusions: Increasing emotional empathy promotes hand hygiene behaviour, also in hospitals. Besides providing new impulses for the design of effective interventions, these findings bear theoretical significance as they document the explanatory power of empathy regarding a distal explanandum (hand hygiene).     

Kurz- und Langzeitbehandlung in der Verhaltenstherapie

In Germany, short and long-term psychotherapy are the two established forms for providing basic outpatient cognitive behavior therapy. The goal of the current study is to describe and discuss empirical evidence for these two structural forms; therefore, results from randomized controlled trials are presented and their implications related to the optimal number of therapy sessions are described. Furthermore, important results of naturalistic process outcome research are outlined. Additionally, the individual needs of patients for specific numbers of sessions are described based on data from the Association of Statutory Health Insurance Physicians. The results of randomized controlled trials generally showed strong empirical evidence for the efficacy of short-term cognitive behavior therapy of 7–20 sessions in patients with simple diagnoses; however, there is less empirical evidence in relation to the general efficacy and differential indications for long-term behavior therapy. These study results are supported by data from 200,000 patients receiving outpatient treatment in the German healthcare system. In two thirds of these patients, less than 25 sessions were sufficient to achieve subjectively adequate clinical improvement; however, approximately 10?% of the patients needed more than 60 therapy sessions. Empirical evidence concerning outcomes of long-term therapy with such a high number of sessions is scarce. Future research should address this research gap in order to identify empirically-based individual adaptation rules concerning the optimal number of treatment sessions in long-term therapy.     

Morpho-orthographic segmentation without semantics

Masked priming studies have repeatedly provided evidence for a form-based morpho-orthographic segmentation mechanism that blindly decomposes any word with the mere appearance of morphological complexity (e.g., corn + er). This account has been called into question by Baayen et al. Psychological Review, 118, 438–482 (2011), who pointed out that the prime words previously tested in the morpho-orthographic condition vary in the extent to which the suffix conveys regular meaning. In the present study, we investigated whether evidence for morpho-orthographic segmentation can be obtained with a set of tightly controlled prime words that are entirely semantically opaque. Using a visual lexical decision task, we compared priming from truly suffixed primes (hunter-HUNT), completely opaque pseudo-suffixed primes (corner-CORN), and non-suffixed primes (cashew-CASH). The results show comparable magnitudes of priming for the truly suffixed and pseudo-suffixed primes, and no priming from non-suffixed primes, and therefore provide further important evidence in support of morpho-orthographic segmentation processes operating in the absence of any possible role for semantics.     

Tracking Fluctuations in Psychological States Using Social Media Language: A Case Study of Weekly Emotion

Personality psychologists are increasingly documenting dynamic, within-person processes. Big data methodologies can augment this endeavour by allowing for the collection of naturalistic and personality-relevant digital traces from online environments. Whereas big data methods have primarily been used to catalogue static personality dimensions, here we present a case study in how they can be used to track dynamic fluctuations in psychological states. We apply a text-based, machine learning prediction model to Facebook status updates to compute weekly trajectories of emotional valence and arousal. We train this model on 2895 human-annotated Facebook statuses and apply the resulting model to 303 575 Facebook statuses posted by 640 US Facebook users who had previously self-reported their Big Five traits, yielding an average of 28 weekly estimates per user. We examine the correlations between model-predicted emotion and self-reported personality, providing a test of the robustness of these links when using weekly aggregated data, rather than momentary data as in prior work. We further present dynamic visualizations of weekly valence and arousal for every user, while making the final data set of 17 937 weeks openly available. We discuss the strengths and drawbacks of this method in the context of personality psychology's evolution into a dynamic science. © 2020 European Association of Personality Psychology     

Emotion emphasis effects in moral judgment are moderated by mindsets

Motivation and Emotion - In two studies, emotion emphasis effects on moral judgment are demonstrated. The studies indicate that emphasizing negative consequences in trolley-type dilemmas with...     

Comparing Cognitive Behavioral Therapy and Systemic Therapy for Social Anxiety Disorder: Randomized Controlled Pilot Trial (SOPHO-CBT/ST)

This randomized controlled trial (RCT) aimed to pilot the newly developed manualized and monitored systemic therapy (ST) for social anxiety disorder (SAD), as compared to manualized and monitored cognitive behavioral therapy (CBT). We conducted a prospective multicenter, assessor-blind pilot RCT on 38 outpatients (ICD F40.1; Structured Clinical Interview for DSM (SCID); Liebowitz Social Anxiety Scale, LSAS-SR >30). The primary outcome was level of social anxiety (LSAS-SR) at the end of treatment. A total of 252 persons were screened, and 38 patients were randomized and started therapy (CBT: 20 patients; ST: 18 patients; age: M = 36 years, SD = 14). Within-group, simple-effect intent-to-treat analyses (ITT) showed significant reduction in LSAS-SR (CBT:d = 1.04; ST:d = 1.67), while ITT mixed-design ANOVA demonstrated the advantage of ST (d = 0.81). Per-protocol analyses supported these results. Remission based on reliable change indices also demonstrated significant difference (LSAS-SR: 15% in CBT; 39% in ST;h: 0.550), supported by blind diagnosticians’ ratings of those who completed therapy (SCID; 45% in CBT, 78% in ST,p = .083). No adverse events were reported. CBT and ST both reduced social anxiety, supporting patient improvement with the newly developed ST for SAD; this has yet to be verified in a subsequent confirmatory RCT.