How Diagrams Can Improve Reasoning

1993 ◽  
Vol 4 (6) ◽  
pp. 372-378 ◽  
Author(s):  
Malcolm I. Bauer ◽  
P. N. Johnson-Laird
Keyword(s):  
Experimental Study ◽  
Mental Models ◽  
Deductive Reasoning ◽  
Alternative Possibilities ◽  
Main Experiment ◽  
Valid Conclusion ◽  
Preliminary Study

We report an experimental study on the effects of diagrams on deductive reasoning with double disjunctions, for example: Raphael is in Tacoma or Julia is in Atlanta, or both. Julia is in Atlanta or Paul is in Philadelphia, or both. What follows? We confirmed that subjects find it difficult to deduce a valid conclusion, such as Julia is in Atlanta, or both Raphael is in Tacoma and Paul is in Philadelphia. In a preliminary study, the format of the premises was either verbal or diagrammatic, and the diagrams used icons to distinguish between inclusive and exclusive disjunctions. The diagrams had no effect on performance. In the main experiment, the diagrams made the alternative possibilities more explicit. The subjects responded faster (about 35 s) and drew many more valid conclusions (nearly 30%) from the diagrams than from the verbal premises. These results corroborate the theory of mental models and have implications for the role of diagrams in reasoning.

scholarly journals Mental Models in Deductive Reasoning

2002 ◽  
Vol 5 (2) ◽  
pp. 125-140 ◽  
Author(s):  
Juan A. García-Madruga ◽  
Francisco Gutiérrez ◽  
Nuria Carriedo ◽  
Sergio Moreno ◽  
Philip N. Johnson-Laird
Keyword(s):  
Mental Models ◽  
Model Theory ◽  
Deductive Reasoning ◽  
Semantic Content ◽  
Syllogistic Reasoning ◽  
Linguistic Structure ◽  
The Third ◽  
As If

We report research investigating the role of mental models in deduction. The first study deals with conjunctive inferences (from one conjunction and two conditional premises) and disjunctive inferences (from one disjunction and the same two conditionals). The second study examines reasoning from multiple conditionals such as: If e then b; If a then b; If b then c; What follows between a and c? The third study addresses reasoning from different sorts of conditional assertions, including conditionals based on if then, only if, and unless. The paper also presents research on figural effects in syllogistic reasoning, on the effects of structure and believability in reasoning from double conditionals, and on reasoning from factual, counterfactual, and semifactual conditionals. The findings of these studies support the model theory, pose some difficulties for rule theories, and show the influence on reasoning of the linguistic structure and the semantic content of problems.

Creativity in Teams: The Role of Shared Mental Models

2011 ◽  
Author(s):  
Nicholas J. Arreola ◽  
Erika Robinson-Morral ◽  
Danielle A. S. Crough ◽  
Ben G. Wigert ◽  
Brad Hullsiek ◽  
...  
Keyword(s):  
Mental Models ◽  
Shared Mental Models

Suva Residents’ Views on Cancer, Diabetes and HIV in The Fiji Times

2020 ◽  
Vol 40 (1) ◽  
Author(s):  
Farzana Gounder
Keyword(s):  
Chronic Illnesses ◽  
Structural Reforms ◽  
Letters To The Editor ◽  
Medical Responsibility ◽  
Grassroots Support ◽  
Preliminary Study ◽  
Socially Relevant ◽  
Situated Approach ◽  
Significant Health

The burden of preventable diseases is increasing in the South Pacific Island Countries and Territories. In Fiji, significant media attention and national finances are spent on public dissemination of the modifiable risk factors of chronic illnesses. However, little is known about lay societal perceptions of chronic illnesses and of people living with these illnesses. This preliminary study takes an area-situated approach to lay knowledge and examines Suva residents’ moral evaluations associated with socially significant health concerns in Fiji. Using the case studies of HIV, cancer, and diabetes, the research employs content analysis to examine 144 Suva residents’ Letters to the Editor, published between 2000 and 2019 in The Fiji Times. The findings indicate that letter writers on chronic illnesses are power sensitive, interested in governmental responsibility, and aware of the role of stigma in creating inequitable health outcomes. The study’s findings locate chronic illness as not only a medical responsibility but also a social justice and human rights concern that requires a multisectoral approach, with community-tailored responses at the heart of all discussions. The lay-societal recognition of the three illnesses as being socially relevant suggests grassroots support for policies directed towards structural reforms for the prevention and management of these illnesses.

Medic Interaction Modes and Hospitalized Children Health

2019 ◽  
Author(s):  
Naveed Shibli ◽  
Miss Shehrish Farooq
Keyword(s):  
Experimental Study ◽  
Health Outcomes ◽  
Block Design ◽  
Pain Scale ◽  
Hospitalized Children ◽  
Face Pain ◽  
Children Health ◽  
Face Pain Scale

<p></p><p>In the present experimental study different interaction ‘modes’ those took place between a psychologist and a child were tested for the role of these towards health recovery of the child? Following were the interaction modes, a) presenting a flower with smile plus inquiring about health, b) offering a blessing plus inquiring about health, c) making an indifferent presence plus inquiring about health with flat tone, d) inquiring about health with providing precautions about prognosis. It was assumed that all modes would differently influence health outcomes? 100 hospitalized children located in child wards of different hospitals with randomized pre-post block design interacted. One each from four interaction modes was used for a group of 25 participants each. Actual ward discharge was compared with anticipatory estimated by each ward in-charge to calculate effect of mode on outcome. Face Pain Scale, The Children Happiness Scale and a Demographic Sheet were also used. Results reflected ‘modes’ relationship with outcomes. More studies would clarify further.</p><br><p></p>

The influence of information relevance on the continued influence effect of misinformation

2020 ◽  
Author(s):  
Hua Jin ◽  
Lina Jia ◽  
Xiaojuan Yin ◽  
Shilin Wei ◽  
Guiping Xu
Keyword(s):  
Experimental Study ◽  
Questionnaire Survey ◽  
Personal Involvement ◽  
Influence Effect ◽  
Information Relevance ◽  
Different Types ◽  
Role Of Information

Misinformation often continues to influence people’s cognition even after corrected (the ‘continued influence effect of misinformation’, the CIEM). This study investigated the role of information relevance in the CIEM by questionnaire survey and experimental study. The results showed that information with higher relevance to the individuals had a larger CIEM, indicating a role of information relevance in the CIEM. Personal involvement might explain the effects of information relevance on the CIEM. This study provides insightful clues for reducing the CIEM in different types of misinformation and misinformation with varying relevance.

Breathing and its stimulatory responses in parkinsonism: repercussions for physiotherapy

2020 ◽  
Author(s):  
Mieczyslaw Pokorski
Keyword(s):  
Experimental Study ◽  
Chronic Hypoxia ◽  
Motor Impairments

This study addresses respiratory and motor impairments in an experimental reserpine-induced model of parkinsonism in rats. The role of chronic hypoxia due to diminished ventilation in the development and course of neurodegeneration is addressed. An attempt was made to distinguish between central and peripheral dopamine pathways in the mechanisms of neurodegeneration. A dissociation of putative mechanisms of respiratory and motor impairments is tackled as well. Although this purely experimental study cannot be directly extrapolated to human pathophysiology, the corollaries have been drawn concerning the potential repercussions of the respiratory and motor impairments for the physiotherapeutic procedures in the management of chronic neurodegeneration.

External Investigators' Follow-Up Intentions When Whistleblowers Report Healthcare Fraud: The Effects of Report Anonymity and Previous Confrontation

2020 ◽  
Vol 32 (2) ◽  
pp. 91-101
Author(s):  
Steven E. Kaplan ◽  
Danny Lanier ◽  
Kelly R. Pope ◽  
Janet A. Samuels
Keyword(s):  
Experimental Study ◽  
Early Detection ◽  
Data Availability ◽  
Medical Provider ◽  
Perceived Credibility ◽  
The Relationship ◽  
Critical Investigation

ABSTRACT Whistleblowing reports, if properly investigated, facilitate the early detection of fraud. Although critical, investigation-related decisions represent a relatively underexplored component of the whistleblowing process. Investigators are responsible for initially deciding whether to follow-up on reports alleging fraud. We report the results of an experimental study examining the follow-up intentions of highly experienced healthcare investigators. Participants, in the role of an insurance investigator, are asked to review a whistleblowing report alleging billing fraud occurring at a medical provider. Thus, participants are serving as external investigators. In a between-participant design, we manipulate the report type and whether the caller previously confronted the wrongdoer. We find that compared to an anonymous report, a non-anonymous report is perceived as more credible and follow-up intentions stronger. We also find that perceived credibility fully mediates the relationship between report type and follow-up intentions. Previous confrontation is not significantly associated with either perceived credibility or follow-up intentions. Data Availability: Data are available upon request.

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