Ivar Vermeulen - Academia.edu (original) (raw)

Papers by Ivar Vermeulen

Research paper thumbnail of Continued influence of misinformation in times of COVID ‐19

International Journal of Psychology

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Research paper thumbnail of An Agenda for Open Science in Communication

Journal of Communication

In the last 10 years, many canonical findings in the social sciences appear unreliable. This so-c... more In the last 10 years, many canonical findings in the social sciences appear unreliable. This so-called “replication crisis” has spurred calls for open science practices, which aim to increase the reproducibility, replicability, and generalizability of findings. Communication research is subject to many of the same challenges that have caused low replicability in other fields. As a result, we propose an agenda for adopting open science practices in Communication, which includes the following seven suggestions: (1) publish materials, data, and code; (2) preregister studies and submit registered reports; (3) conduct replications; (4) collaborate; (5) foster open science skills; (6) implement Transparency and Openness Promotion Guidelines; and (7) incentivize open science practices. Although in our agenda we focus mostly on quantitative research, we also reflect on open science practices relevant to qualitative research. We conclude by discussing potential objections and concerns associ...

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Research paper thumbnail of Recommendations for the Sharing Economy: Safeguarding Privacy

SSRN Electronic Journal

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Research paper thumbnail of Privacy in the Sharing Economy

SSRN Electronic Journal, 2000

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Research paper thumbnail of Online cognition: factors facilitating reliable online neuropsychological test results

The Clinical Neuropsychologist, 2016

Online neuropsychological test batteries could allow for large-scale cognitive data collection in... more Online neuropsychological test batteries could allow for large-scale cognitive data collection in clinical studies. However, the few online neuropsychological test batteries that are currently available often still require supervision or lack proper psychometric evaluation. In this paper, we have outlined prerequisites for proper development and use of online neuropsychological tests, with the focus on reliable measurement of cognitive function in an unmonitored setting. First, we identified several technical, contextual, and psychological factors that should be taken into account in order to facilitate reliable test results of online tests in the unmonitored setting. Second, we outlined a methodology of quality assurance needed in order to obtain reliable cognitive data in the long run. Based on factors that distinguish the online unmonitored test setting from the traditional face-to-face setting, we provide a set of basic requirements and suggestions for optimal development and use of unmonitored online neuropsychological tests, including suggestions on acquiring reliability, validity, and norm scores. When properly addressing factors that could hamper reliable test results during development and use, online neuropsychological tests could aid large-scale data collection for clinical studies in the future. Investment in both proper development of online neuropsychological test platforms and the performance of accompanying psychometric studies is currently required.

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Research paper thumbnail of A logical approach to competition in industries

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Research paper thumbnail of Music and Wine Online: Background Music Increases Congruent Online Wine Sales

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Research paper thumbnail of Blinded by the Light: How a Focus on Statistical “Significance” May Cause p -Value Misreporting and an Excess of p -Values Just Below .05 in Communication Science

Communication Methods and Measures, 2015

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Research paper thumbnail of Questionable Research and Publication Practices in Communication Science

Communication Methods and Measures, 2015

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Research paper thumbnail of A Fool in the Door: Inducing Empathy to Increase Compliance

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Research paper thumbnail of Effecten van synchroon bewegen op groepspercepties en coöperatief gedrag bij middelbare scholieren

Tijdschrift Voor Communicatie Wetenschap, 2012

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Research paper thumbnail of Social Influence in Organizational Discourse Networks

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Research paper thumbnail of Effects of Music in Advertising: Three Experiments Replicating Single-Exposure Musical Conditioning of Consumer Choice (Gorn, 1982) in an Individual Setting

Journal of Advertising, 2015

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Research paper thumbnail of Differential processing of humor types in tv commercials: implicatures’ response latencies

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Research paper thumbnail of Phantom phone signals: An investigation into the prevalence and predictors of imagined cell phone signals

Computers in Human Behavior, 2015

ABSTRACT This paper aims to elucidate the peculiar phenomenon of imagined cell phone signals, or ... more ABSTRACT This paper aims to elucidate the peculiar phenomenon of imagined cell phone signals, or Phantom Phone Signals (PPS), which is defined as an individual’s perception of a phone signal, indicating an incoming call, message, or social media notification, when in fact no such signal was transmitted. A survey among 408 US citizens confirmed that PPS is a highly prevalent phenomenon: Almost 50% of all respondents indicated to experience some form of PPS at least once a week, and 63% at least once a month. Further results show that intensity of phone use, self-reported excessive use, and phone addiction are positively related to the frequency of experiencing PPS. The explanation for these findings might be that chronically accessible schemas resulting from intensive phone use may result in misinterpretations of other signals, or in benign hallucinations, and that the perceived importance of phone use makes people more vigilant to potential phone signals. Need for popularity (NFP) proved to be a stronger predictor of PPS than need to belong, supporting the assumption that NFP is a good predictor for socially induced behavior. Finally, the injunctive and descriptive norms about being accessible on the phone only approached significance in their positive relation to experiencing PPS.

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Research paper thumbnail of Breaching Interactive Storytelling’s Implicit Agreement: A Content Analysis of Fac̨ade User Behaviors

Lecture Notes in Computer Science, 2013

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Research paper thumbnail of This week in social media research: Who are those people not using Facebook?

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Research paper thumbnail of Reliability and validity of a self-administered tool for online neuropsychological testing: The Amsterdam Cognition Scan

Journal of clinical and experimental neuropsychology, Jan 3, 2017

To facilitate large-scale assessment of a variety of cognitive abilities in clinical studies, we ... more To facilitate large-scale assessment of a variety of cognitive abilities in clinical studies, we developed a self-administered online neuropsychological test battery: the Amsterdam Cognition Scan (ACS). The current studies evaluate in a group of adult cancer patients: test-retest reliability of the ACS and the influence of test setting (home or hospital), and the relationship between our online and a traditional test battery (concurrent validity). Test-retest reliability was studied in 96 cancer patients (57 female; Mage = 51.8 years) who completed the ACS twice. Intraclass correlation coefficients (ICCs) were used to assess consistency over time. The test setting was counterbalanced between home and hospital; influence on test performance was assessed by repeated measures analyses of variance. Concurrent validity was studied in 201 cancer patients (112 female; Mage = 53.5 years) who completed both the online and an equivalent traditional neuropsychological test battery. Spearman or...

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Research paper thumbnail of Ecology in Organizational Markets

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Research paper thumbnail of In Search of a Niche: Differentiation Among Internet Search Engines, 1993-2000

... Organization ecology argues that in concentrated markets, generalists are forced to focus on ... more ... Organization ecology argues that in concentrated markets, generalists are forced to focus on the market core ... 25), internet (25), organ (24), web (23), inform (23), user (22), increas (22), industri (22), measur ... 2010-11-11 <http://www.allacademic.com/meta/p300523_index.html&gt;. ...

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Research paper thumbnail of Continued influence of misinformation in times of COVID ‐19

International Journal of Psychology

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Research paper thumbnail of An Agenda for Open Science in Communication

Journal of Communication

In the last 10 years, many canonical findings in the social sciences appear unreliable. This so-c... more In the last 10 years, many canonical findings in the social sciences appear unreliable. This so-called “replication crisis” has spurred calls for open science practices, which aim to increase the reproducibility, replicability, and generalizability of findings. Communication research is subject to many of the same challenges that have caused low replicability in other fields. As a result, we propose an agenda for adopting open science practices in Communication, which includes the following seven suggestions: (1) publish materials, data, and code; (2) preregister studies and submit registered reports; (3) conduct replications; (4) collaborate; (5) foster open science skills; (6) implement Transparency and Openness Promotion Guidelines; and (7) incentivize open science practices. Although in our agenda we focus mostly on quantitative research, we also reflect on open science practices relevant to qualitative research. We conclude by discussing potential objections and concerns associ...

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Research paper thumbnail of Recommendations for the Sharing Economy: Safeguarding Privacy

SSRN Electronic Journal

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Research paper thumbnail of Privacy in the Sharing Economy

SSRN Electronic Journal, 2000

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Research paper thumbnail of Online cognition: factors facilitating reliable online neuropsychological test results

The Clinical Neuropsychologist, 2016

Online neuropsychological test batteries could allow for large-scale cognitive data collection in... more Online neuropsychological test batteries could allow for large-scale cognitive data collection in clinical studies. However, the few online neuropsychological test batteries that are currently available often still require supervision or lack proper psychometric evaluation. In this paper, we have outlined prerequisites for proper development and use of online neuropsychological tests, with the focus on reliable measurement of cognitive function in an unmonitored setting. First, we identified several technical, contextual, and psychological factors that should be taken into account in order to facilitate reliable test results of online tests in the unmonitored setting. Second, we outlined a methodology of quality assurance needed in order to obtain reliable cognitive data in the long run. Based on factors that distinguish the online unmonitored test setting from the traditional face-to-face setting, we provide a set of basic requirements and suggestions for optimal development and use of unmonitored online neuropsychological tests, including suggestions on acquiring reliability, validity, and norm scores. When properly addressing factors that could hamper reliable test results during development and use, online neuropsychological tests could aid large-scale data collection for clinical studies in the future. Investment in both proper development of online neuropsychological test platforms and the performance of accompanying psychometric studies is currently required.

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Research paper thumbnail of A logical approach to competition in industries

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Research paper thumbnail of Music and Wine Online: Background Music Increases Congruent Online Wine Sales

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Blinded by the Light: How a Focus on Statistical “Significance” May Cause p -Value Misreporting and an Excess of p -Values Just Below .05 in Communication Science

Communication Methods and Measures, 2015

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Research paper thumbnail of Questionable Research and Publication Practices in Communication Science

Communication Methods and Measures, 2015

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Research paper thumbnail of A Fool in the Door: Inducing Empathy to Increase Compliance

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effecten van synchroon bewegen op groepspercepties en coöperatief gedrag bij middelbare scholieren

Tijdschrift Voor Communicatie Wetenschap, 2012

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Research paper thumbnail of Social Influence in Organizational Discourse Networks

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Effects of Music in Advertising: Three Experiments Replicating Single-Exposure Musical Conditioning of Consumer Choice (Gorn, 1982) in an Individual Setting

Journal of Advertising, 2015

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Differential processing of humor types in tv commercials: implicatures’ response latencies

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Phantom phone signals: An investigation into the prevalence and predictors of imagined cell phone signals

Computers in Human Behavior, 2015

ABSTRACT This paper aims to elucidate the peculiar phenomenon of imagined cell phone signals, or ... more ABSTRACT This paper aims to elucidate the peculiar phenomenon of imagined cell phone signals, or Phantom Phone Signals (PPS), which is defined as an individual’s perception of a phone signal, indicating an incoming call, message, or social media notification, when in fact no such signal was transmitted. A survey among 408 US citizens confirmed that PPS is a highly prevalent phenomenon: Almost 50% of all respondents indicated to experience some form of PPS at least once a week, and 63% at least once a month. Further results show that intensity of phone use, self-reported excessive use, and phone addiction are positively related to the frequency of experiencing PPS. The explanation for these findings might be that chronically accessible schemas resulting from intensive phone use may result in misinterpretations of other signals, or in benign hallucinations, and that the perceived importance of phone use makes people more vigilant to potential phone signals. Need for popularity (NFP) proved to be a stronger predictor of PPS than need to belong, supporting the assumption that NFP is a good predictor for socially induced behavior. Finally, the injunctive and descriptive norms about being accessible on the phone only approached significance in their positive relation to experiencing PPS.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Breaching Interactive Storytelling’s Implicit Agreement: A Content Analysis of Fac̨ade User Behaviors

Lecture Notes in Computer Science, 2013

Bookmarks Related papers MentionsView impact

Research paper thumbnail of This week in social media research: Who are those people not using Facebook?

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Reliability and validity of a self-administered tool for online neuropsychological testing: The Amsterdam Cognition Scan

Journal of clinical and experimental neuropsychology, Jan 3, 2017

To facilitate large-scale assessment of a variety of cognitive abilities in clinical studies, we ... more To facilitate large-scale assessment of a variety of cognitive abilities in clinical studies, we developed a self-administered online neuropsychological test battery: the Amsterdam Cognition Scan (ACS). The current studies evaluate in a group of adult cancer patients: test-retest reliability of the ACS and the influence of test setting (home or hospital), and the relationship between our online and a traditional test battery (concurrent validity). Test-retest reliability was studied in 96 cancer patients (57 female; Mage = 51.8 years) who completed the ACS twice. Intraclass correlation coefficients (ICCs) were used to assess consistency over time. The test setting was counterbalanced between home and hospital; influence on test performance was assessed by repeated measures analyses of variance. Concurrent validity was studied in 201 cancer patients (112 female; Mage = 53.5 years) who completed both the online and an equivalent traditional neuropsychological test battery. Spearman or...

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Research paper thumbnail of Ecology in Organizational Markets

Bookmarks Related papers MentionsView impact

Research paper thumbnail of In Search of a Niche: Differentiation Among Internet Search Engines, 1993-2000

... Organization ecology argues that in concentrated markets, generalists are forced to focus on ... more ... Organization ecology argues that in concentrated markets, generalists are forced to focus on the market core ... 25), internet (25), organ (24), web (23), inform (23), user (22), increas (22), industri (22), measur ... 2010-11-11 <http://www.allacademic.com/meta/p300523_index.html&gt;. ...

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