• Aberrant salience predicts fluctuations of paranoia two weeks in advance during a 1-year experience sampling method study in people with psychosis 

      Luedtke, Thies; Moritz, Steffen; Westermann, Stefan; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-03)
      The Experience Sampling Method (ESM) has improved our understanding of psychosis considerably (Myin-Germeys et al., 2018). Not only has ESM shed light on the moment-to-moment variability of psychotic symptoms, it has equally helped to identify micro-level precursor variables that forecast symptom exacerbations a couple of hours in advance. Among others, established ESM-derived precursors are negative ...
    • Aberrant uncertainty processing is linked to psychotic‑like experiences, autistic traits, and is reflected in pupil dilation during probabilistic learning 

      Kreis, Isabel; Zhang, Lei; Mittner, Matthias Bodo; Syla, Leonard Parks; Claus, Lamm; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-28)
      Aberrant belief updating due to misestimation of uncertainty and an increased perception of the world as volatile (i.e., unstable) has been found in autism and psychotic disorders. Pupil dilation tracks events that warrant belief updating, likely reflecting the adjustment of neural gain. However, whether subclinical autistic or psychotic symptoms affect this adjustment and how they relate to learning ...
    • Aberrant uncertainty processing is linked to psychotic‑like experiences, autistic traits, and is reflected in pupil dilation during probabilistic learning 

      Kreis, Isabel; Zhang, Lei; Mittner, Matthias Bodo; Syla, Leonard Parks; Lamm, Claus; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-28)
      Aberrant belief updating due to misestimation of uncertainty and an increased perception of the world as volatile (i.e., unstable) has been found in autism and psychotic disorders. Pupil dilation tracks events that warrant belief updating, likely refecting the adjustment of neural gain. However, whether subclinical autistic or psychotic symptoms afect this adjustment and how they relate to learning ...
    • Analysing mHealth usage logs in RCTs: Explaining participants’ interactions with type 2 diabetes self-management tools 

      Bradway, Meghan; Pfuhl, Gerit; Joakimsen, Ragnar Martin; Ribu, Lis; Grøttland, Astrid; Årsand, Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-30)
      <p><i>Background</i>: The Introduction of mobile health (mHealth) devices to health intervention studies challenges us as researchers to adapt how we analyse the impact of these technologies. For interventions involving chronic illness self-management, we must consider changes in behaviour in addition to changes in health. Fortunately, these mHealth technologies can record participants’ interactions ...
    • Analyzing buyer behavior when selecting green criteria in public procurement 

      Igarashi, Mieko; De Boer, Luitzen; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2017)
      Given the complexity of green public procurement, decisions are likely to be driven by bounded rationality. However, we know little about what determines supplier selection criteria in any given situation. This study explores buyer behavior when considering environmental criteria. We first conducted interviews and identified 12 operational procedures used by buyers. We then developed a survey to ...
    • Are psychotic experiences related to poorer reflective reasoning? 

      Mækelæ, Martin Jensen; Moritz, Steffen; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-12)
      <p><i>Background</i>: Cognitive biases play an important role in the formation and maintenance of delusions. These biases are indicators of a weak reflective mind, or reduced engaging in reflective and deliberate reasoning. In three experiments, we tested whether a bias to accept non-sense statements as profound, treat metaphorical statements as literal, and suppress intuitive responses is related ...
    • Avalanche decision-making frameworks: Classification and description of underlying factors 

      Landrø, Markus; Pfuhl, Gerit; Engeset, Rune; Jackson, Miriam; Hetland, Audun (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-17)
      Snow avalanches are a complex phenomenon and correctly assessing avalanche danger is crucial in order to avoid accidents. To aid the decision-making process, different decision-making frameworks (DMFs) have been developed. However, each DMF assesses different factors. We identified 44 factors included in the ten most commonly used DMFs, supplemented by nine factors regarded as important by avalanche ...
    • Avalanche decision-making frameworks: Factors and methods used by experts 

      Landrø, Markus; Hetland, Audun; Engeset, Rune; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-31)
      The snowy mountains of the world attract more and more backcountry recreationalists. Besides beauty and joy, traveling in avalanche terrain can involve risk of injury and even death. A correct assessment of avalanche danger and following a correct decision is crucial. This requires a thorough evaluation of a range of factors. To aid these decisions several decision-making frameworks (DMF) have been ...
    • Bayesian analysis of risk- and ambiguity aversion in two information sampling tasks 

      Klevjer, Kristoffer; Pfuhl, Gerit (Conference object; Konferansebidrag, 2020-07)
      Humans are aversive to risk (irreducible uncertainty) and ambiguity (reducible uncertainty). However, strong ambiguity aversion does not necessarily imply strong risk aversion. Further, in real life it can be challenging to attribute uncertainty and one may treat ambiguity as risk. This can lead to biases in information sampling, i.e. premature stopping of collecting information that could ...
    • A Bayesian perspective on delusions: Suggestions for modifying two reasoning tasks 

      Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08)
      Background and objectives:<br>There are a range of mechanistic explanations on the formation and maintenance of delusions. Within the Bayesian brain hypothesis, particularly within the framework of predictive coding models, delusions are seen as an aberrant inference process characterized by either a failure in sensory attenuation or an aberrant weighting of prior experience. Testing of these ...
    • Colours and maps for communicating natural hazards to users with and without colour vision deficiency 

      Engeset, Rune Verpe; Pfuhl, Gerit; Orten, Camilla; Hendrikx, Jordy; Hetland, Audun (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-14)
      Natural hazards are often communicated visually using colours and maps. However, users' ability to read and understand these products may be hampered by e.g., colour vision deficiency, potentially rendering the products less effective or even counter effective. To study these effects, we conducted two web-based surveys and analysed how to improve visual communication of avalanches, floods, landslides, ...
    • Communicating public avalanche warnings – what works? 

      Engeset, Rune; Pfuhl, Gerit; Landrø, Markus; Mannberg, Andrea; Hetland, Audun (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-20)
      Like many other mountainous countries, Norway has experienced a rapid increase in both recreational winter activities and fatalities in avalanche terrain during the past few decades: during the decade 2008–2017, 64 recreational avalanche fatalities were recorded in Norway. This is a 106% increase from that of the previous decade. In 2013, Norway therefore launched the National Avalanche Warning ...
    • The Confidence Database 

      Rahnev, Dobromir; Desender, Kobe; Lee, Alan L. F.; Adler, William T.; Aguilar-Lleyda, David; Akdoğan, Başak; Arbuzova, Polina; Atlas, Lauren Y.; Balcı, Fuat; Bang, Ji Won; Bègue, Indrit; Birney, Damian P.; Brady, Timothy F.; Calder-Travis, Joshua; Chetverikov, Andrey; Clark, Torin K.; Davranche, Karen; Denison, Rachel N.; Dildine, Troy C.; Double, Kit S.; Duyan, Yalçın A.; Faivre, Nathan; Fallow, Kaitlyn; Filevich, Elisa; Gajdos, Thibault; Gallagher, Regan M.; de Gardelle, Vincent; Gherman, Sabina; Haddara, Nadia; Hainguerlot, Marine; Hsu, Tzu-Yu; Hu, Xiao; Iturrate, Iñaki; Jaquiery, Matt; Kantner, Justin; Koculak, Marcin; Konishi, Mahiko; Koß, Christina; Kvam, Peter D.; Kwok, Sze Chai; Lebreton, Maël P.; Lempert, Karolina M.; Ming Lo, Chien; Luo, Liang; Maniscalco, Brian; Martin, Antonio; Massoni, Sébastien; Matthews, Julian; Mazancieux, Audrey; Merfeld, Daniel M.; O’Hora, Denis; Palser, Eleanor R.; Paulewicz, Borysław; Pereira, Michael; Peters, Caroline; Philiastides, Marios G.; Pfuhl, Gerit; Prieto, Fernanda; Rausch, Manuel; Recht, Samuel; Reyes, Gabriel; Rouault, Marion; Sackur, Jérôme; Sadeghi, Saeedeh; Samaha, Jason; Seow, Tricia X. F.; Shekhar, Medha; Sherman, Maxine T.; Siedlecka, Marta; Skóra, Zuzanna; Song, Chen; Soto, David; Sun, Sai; van Boxtel, Jeroen J. A.; Wang, Shuo; Weidemann, Christoph T.; Weindel, Gabriel; Wierzchoń, Michał; Xu, Xinming; Ye, Qun; Yeon, Jiwon; Zou, Futing; Zylberberg, Ariel (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-02-03)
      Understanding how people rate their confidence is critical for the characterization of a wide range of perceptual, memory, motor and cognitive processes. To enable the continued exploration of these processes, we created a large database of confidence studies spanning a broad set of paradigms, participant populations and fields of study. The data from each study are structured in a common, easy-to-use ...
    • Covid-19 pandemic lessons: uncritical communication of test results can induce more harm than benefit and raises questions on standardized quality criteria for communication and liability 

      Porzsolt, Franz; Pfuhl, Gerit; Kaplan, Robert M; Eisemann, Martin (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-21)
      Background - The COVID-19 pandemic is characterized by both health and economic risks. A ‘safety loop’ model postulates risk-related decisions are not based on objective and measurable risks but on the subjective perception of those risks. We here illustrate a quantification of the difference between objective and subjective risks.<p> <p>Method - The objective risks (or chances) can be obtained ...
    • A creative destruction approach to replication: Implicit work and sex morality across cultures 

      Tierney, Warren; Hardy III, Jay; Ebersole, Charles R; Viganola, Domenico; Clemente, Elena Giulia; Gordon, Michael; Hoogeveen, Suzanne; Haaf, Julila; Dreber, Anna; Johannesson, Magnus; Pfeiffer, Thomas; Huang, Jason L.; Vaughn, Ann; DeMarree, Kenneth; Igou, Eric R.; Chapman, Hanah; Gantman, Ana; Pfuhl, Gerit; Uhlmann, Eric Luis (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-12-03)
      How can we maximize what is learned from a replication study? In the creative destruction approach to replication, the original hypothesis is compared not only to the null hypothesis, but also to predictions derived from multiple alternative theoretical accounts of the phenomenon. To this end, new populations and measures are included in the design in addition to the original ones, to help determine ...
    • Crowdsourcing Hypothesis Tests: Making Transparent How Design Choices Shape Research Results 

      Landy, Justin F; Jia, Miaolei; Ding, Isabel L; Viganola, Domenico; Tierney, Warren; Dreber, Anna; Johannesson, Magnus; Pfeiffer, Thomas; Ebersole, Charles R; Gronau, Quentin F; Pfuhl, Gerit; Ly, Alexander; van den Bergh, Don; Marsman, Maarten; Derks, Koen; Wagenmakers, Eric-Jan; Proctor, Andrew; Bartels, Daniel M.; Bauman, Christopher W.; Brady, William J.; Cheung, Felix; Cimpian, Andrei; Dohle, Simone; Donnellan, M. Brent; Hahn, Adam; Hall, Michael P.; Jiménez-Leal, William; Johnson, David J.; Lucas, Richard E.; Monin, Benoît; Montealegre, Andres; Mullen, Elizabeth; Pang, Jun; Ray, Jennifer; Reinero, Diego A.; Reynolds, Jesse; Sowden, Walter; Storage, Daniel; Su, Runkun; Tworek, Christina M.; Van Bavel, Jay J.; Walco, Daniel; Wills, Julian; Xu, Xiaobing; Yam, Kai Chi; Yang, Xiaoyu; Cunningham, William A.; Schweinsberg, Martin; Urwitz, Molly; Uhlmann, Eric L. (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-16)
      To what extent are research results influenced by subjective decisions that scientists make as they design studies? Fifteen research teams independently designed studies to answer five original research questions related to moral judgments, negotiations, and implicit cognition. Participants from 2 separate large samples (total N 15,000) were then randomly assigned to complete 1 version ...
    • Dataset of motivational factors for using mobile health applications and systems 

      Henriksen, André; Issom, David-Zacharie; Woldaregay, Ashenafi Zebene; Pfuhl, Gerit; Årsand, Eirik; Sato, Keiichi; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-16)
      We created and carried out a cross-sectional anonymous structured questionnaire on what motivates users of mobile health applications and wearables to share their collected health related data. The questionnaire was distributed online in English, French, and Norwegian. In addition, a flyer with information of where to locate the online questionnaire was distributed during a Swiss health conference. ...
    • Deliberate reasoning is not affected by language 

      Mækelæ, Martin Jensen; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-01-31)
      <p><i>Background</i>: Millions of people use a second language every day. Does this have an effect on their decision-making? Are decisions in a second language more deliberate? Two mechanisms have been proposed: reduced emotionality or increased deliberation. Most studies so far used problems where both mechanisms could contribute to a foreign language effect. Here, we aimed to identify whether ...
    • Discrepancies in the spiking threshold and frequency sensitivity of nocturnal moths explainable by biases in the canonical auditory stimulation method 

      Thevenon, Hervé Emile Louis; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-11)
      The auditory stimulation method used in experiments on moth A cell(s) is generally believed to be adequate to characterize the encoding of bat echolocation signals. The stimulation method hosts, though, several biases. Their compounded effects can explain a range of discrepancies between the reported electrophysiological recordings and significantly alter the current interpretation. To test the ...
    • Do parental cognitions during pregnancy predict bonding after birth in a low-risk sample? 

      Bohne, Agnes; Nordahl, Dag; Høifødt, Ragnhild Sørensen; Moe, Vibeke; Landsem, Inger Pauline; Wang, Catharina Elisabeth Arfwedson; Pfuhl, Gerit (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-14)
      Parental bonding to their infant is important for healthy parent-infant interaction and infant development. Characteristics in the parents affect how they bond to their newborn. Parental cognitions such as repetitive negative thinking, a thinking style associated with mental health issues, and cognitive dispositions, e.g., mood-congruent attentional bias or negative implicit attitudes to infants, ...