Marc Jekel

Marc Jekel
University of Cologne | UOC · Department of Psychology

Dr.

About

19
Publications
45,404
Reads
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4,803
Citations
Introduction
Marc Jekel currently works at the Universität zu Köln. Marc does research in Cognitive Psychology and Quantitative Psychology.
Additional affiliations
October 2018 - present
University of Cologne
Position
  • PostDoc Position
February 2016 - September 2018
FernUniversität in Hagen
Position
  • Lecturer
October 2015 - January 2016
FernUniversität in Hagen
Position
  • Senior Researcher
Education
April 2007 - March 2012
University of Bonn
Field of study
  • Psychologie
October 2000 - December 2006
Universität Heidelberg
Field of study
  • Psychologie

Publications

Publications (19)
Article
Full-text available
The Integrated Coherence-Based Decision and Search (iCodes) model proposed by Jekel et al. ( Psychological Review, 125 (5), 744–768, 2018) formalizes both decision making and pre-decisional information search as coherence-maximization processes in an interactive network. Next to bottom-up attribute influences, the coherence of option information ex...
Article
We provide ratings for a representative set of 2,000 German first names with regard to perceived sex, foreign origin (yes/no), and familiarity. In two studies participants ( N = 736 and N = 237) estimated intelligence, education, attractiveness, religiousness, age, warmth, and competence of persons with the respective name. Descriptive results show...
Article
Full-text available
The Hagen Cumulative Science Project is a large-scale replication project based on students’ thesis work. In the project, we aim to (i) teach students to conduct the entire research process for conducting a replication according to current open science standards and (ii) contribute to cumulative science by increasing the number of direct replicatio...
Article
Full-text available
Hypotheses derived from models can be tested in an empirical study: If the model reliably fails to predict behavior, it can be dismissed or modified. Models can also be evaluated before data are collected: More useful models have a high level of empirical content (Popper in Logik der Forschung, Mohr Siebeck, Tübingen, 1934), i.e., they make precise...
Article
Adaptive actors must be able to use probabilities as decision weights. In a computerized multi-attribute task, the authors examined the decisions of children (5–6 years, n = 44; 9–10 y., n = 39) and adults (21–22 y., n = 31) in an environment that fosters the application of a weighted-additive strategy that uses probabilities as weights (WADD: choo...
Article
Full-text available
A common assumption of many established models for decision making is that information is searched according to some prespecified search rule. While the content of the information influences the termination of search, usually specified as a stopping rule, the direction of search is viewed as being independent of the valence of the retrieved informa...
Article
Proper methods for model comparisons require including reasonable models and all data. In an article in this issue, we highlight that excluding some models was common in parts of the literature supposedly supporting fast-and-frugal heuristics and show in comprehensive simulations and exemplified reanalyses of studies by Rieskamp that this can—under...
Article
Full-text available
Over the years several non-equivalent probabilistic measures of coherence have been discussed in the philosophical literature. In this paper we examine these measures with respect to their empirical adequacy. Using test cases from the coherence literature as vignettes for psychological experiments we investigate whether the measures can predict the...
Article
Model comparisons based on choices are a common method to assess adaptive strategy selection models. We show that one common methodological choice prevailing in parts of this work makes it hard to draw sound conclusions concerning the central questions of how often people indeed use simplified strategies (e.g., fast-and-frugal heuristics) and wheth...
Article
Recent research makes increasing use of eye-tracking methodologies to generate and test process models. Overall, such research suggests that attention, generally indexed by fixations (gaze duration), plays a critical role in the construction of preference, although the methods used to support this supposition differ substantially. In 2 studies we e...
Article
Full-text available
Reproducibility is a defining feature of science, but the extent to which it characterizes current research is unknown. We conducted replications of 100 experimental and correlational studies published in three psychology journals using high-powered designs and original materials when available. Replication effects were half the magnitude of origin...
Article
There is broad consensus that human cognition is adaptive. However, the vital question of how exactly this adaptivity is achieved has remained largely open. Herein, we contrast two frameworks which account for adaptive decision making, namely broad and general single-mechanism accounts vs. multi-strategy accounts. We propose and fully specify a sin...
Article
Full-text available
In a highly uncertain world, individuals often have to make decisions in situations with incomplete information. We investigated in three experiments how partial cue information is treated in complex probabilistic inference tasks. Specif-ically, we test a mechanism to infer missing cue values that is based on the discrimination rate of cues (i.e.,...
Article
Full-text available
Whereas classic work in judgment and decision making has focused on the deviation of intuition from rationality,more recent research has focused on the performance of intuition in real-world environments. Borrowing from both approaches, we investigate to which extent competing models of intuitive probabilistic decision making overlap with choices a...
Article
Full-text available
Recent theorizing on the relation between victim sensitivity and unethical behavior predicts that victim sensitivity is related to an asymmetrical focus on cues associated with untrustworthiness compared to cues associated with trustworthiness. This hypothesis and its consequences for the accuracy of social predictions are investigated in this arti...
Article
Full-text available
One major statistical and methodological challenge in Judgment and Decision Making research is the reliable identification of individual decision strategies by selection of diagnostic tasks, that is, tasks for which predictions of the strategies differ sufficiently. The more strategies are considered, and the larger the number of dependent measures...
Article
The aim of the present study was to investigate whether job satisfaction mediates between leader-member exchange and nurse turnover intentions. Limited knowledge is available on the mediating role of job satisfaction between leader-member exchange and turnover intentions in the nursing field. This is a cross-sectional survey study. Data were collec...
Article
Full-text available
One major challenge to behavioral decision research is to identify the cognitive processes underlying judgment and decision making. Gloeckner (2009) has argued that, compared to previous methods, process models can be more efficiently tested by simultaneously analyzing choices, decision times, and confidence judgments. The Multiple-Measure Maximum...

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Project (1)
Project
Die im Zuge der Energiewende stattfindende Weiterentwicklung des Strommarkts ermöglicht eine sektorübergreifende Koordination von Stromnachfrage und -erzeugung. Energieflexible Fabriken nutzen diese Chance, indem sie auf Angebotsschwankungen reagieren und selbst Regelenergie zur Verfügung stellen. Daraus ergeben sich zwei zentrale Implikationen für das Management energieflexibler Fabriken. Zum einen gilt es, die neu gewonnenen technologischen Freiheitsgrade und die im Zuge der Energiewende veränderten Rahmenbedingungen in der strategischen Planung von Fabriken zu berücksichtigen. Zum anderen ist eine drastische Zunahme der Komplexität und Dynamik in der operativen Produktionsplanung zu verzeichnen. Bestehende Ansätze des Produktionsmanagements sind vor diesem Hintergrund grundlegend zu überdenken. Ziel dieses interdisziplinären Verbundprojekts ist es, die Forschungskompetenz von vier Lehrstühlen aus drei Fakultäten zusammenzuführen, um neue Modelle, Methoden und Instrumente für das Management energieflexibler Fabriken zu entwickeln.