Mirjam A. Jenny

• Dr.
• Researcher at Max Planck Institute for Human Development

People often take nondiagnostic information into account when revising their beliefs. A probability judgment decreases due to nondiagnostic information represents the well-established “dilution effect” observed in many domains. Surprisingly, the opposite of the dilution effect called the “confirmation effect” has also been observed frequently. The...

Schnelltests ergeben nur dann Sinn, wenn Gruppen getestet werden, die einen hohen Anteil an Infizierten aufweisen - andernfalls erhält man zu viele falsch positive Ergebnisse. Das Robert Koch-Institut hat eine Infografik erstellt, die das Problem unterschiedlicher Testansätze aufzeigt.

Background Generalized weakness and fatigue are underexplored symptoms in emergency medicine. Triage tools often underestimate patients presenting to the emergency department (ED) with these nonspecific symptoms (Nemec et al., 2010). At the same time, physicians’ disease severity rating (DSR) on a scale from 0 (not sick at all) to 10 (extremely sic...

The term process model is widely used but rarely agreed upon. This paper proposes a framework for characterizing and building cognitive process models. Process models model not only inputs and outputs but also model the ongoing information transformations at a given level of abstraction. We argue that the following dimensions characterize process m...

Ärzte müssen medizinische Risiken nicht nur richtig einschätzen, sondern sie auch verständlich den Patienten kommunizieren. Das ist nicht einfach. Es gibt aber Werkzeuge, die die ärztliche Risikokompetenz erhöhen und die Risikokommunikation gegenüber Patienten erleichtern.

The predictive power of certain symptoms, such as dyspnoea, is well known. However, research is limited to the investigation of single chief complaints. This is in contrast to patients in the emergency department (ED) presenting usually more than one symptom. We aimed to identify the most common combinations of symptoms and to report their related...

Objectives To assess minimal medical statistical literacy in medical students and senior educators using the 10-item Quick Risk Test; to assess whether deficits in statistical literacy are stable or can be reduced by training. Design Prospective observational study on the students, observational study on the university lecturers. Setting Charité...

Objectives: Patients presenting to the emergency department (ED) with nonspecific complaints are difficult to accurately triage, risk stratify, and diagnose. This can delay appropriate treatment. The extent to which key medical outcomes are at all predictable in these patients, and which (if any) predictors are useful, has previously been unclear....

Judging whether multiple events will co-occur is an important aspect of everyday decision making. The underlying probabilities of occurrence are usually unknown and have to be inferred from experience. Using a rigorous, quantitative model comparison, we investigate how people judge the conjunctive probabilities of multiple events to co-occur. In 2...

Depressive disorders are major public health issues worldwide. We tested the capacity of a simple lexicographic and noncompensatory fast and frugal tree (FFT) and a simple compensatory unit-weight model to detect depressed mood relative to a complex compensatory logistic regression and a naïve maximization model. The FFT and the two compensatory mo...

Depressive disorders are major public health issues worldwide. We tested the capacity of a simple lexicographic and noncompensatory fast and frugal tree (FFT) and a simple compensatory unit-weight model to detect depressed mood relative to a complex compensatory logistic regression and a naïve maximization model. The FFT and the two compensatory mo...

Supplementary Material: Psychologists Are Open to Change, Yet Wary of Rules

People often overestimate probabilities of conjunctive events. The authors explored whether the accuracy of conjunctive probability estimates can be improved by increased experience with relevant constituent events and by using memory aids. The first experiment showed that increased experience with constituent events increased the correlation betwe...

Psychologists must change the way they conduct and report their research-this notion has been the topic of much debate in recent years. One article recently published in Psychological Science proposing six requirements for researchers concerning data collection and reporting practices as well as four guidelines for reviewers aimed at improving the...