Joshua J. Guyer, Ph.D.
Department of Psychology
Psychology
Education
Postdoctoral Research Fellow, Universidad Aut贸noma de Madrid, Social Psychology
Doctor of Philosophy, Queen's University, Social-Personality Psychology
Master of Science, Queen's University, Social-Personality Psychology
Bachelor of Arts (Honors), Kwantlen Polytechnic University, Psychology
Research Interests
- Attitudes & Persuasion
- Social Influence
- Nonverbal Behavior
Publications and Media Placements
Vaughan-Johnston, T. I., Guyer, J. J., Fabrigar, L. R., Lamprinakos, G., & Bri帽ol,
P. (In Press). Falling Vocal Intonation Signals Speaker Confidence and can both Help
and Hinder Persuasion. Personality and Social Psychology Bulletin.
Horcajo, J., Santos, D., Gil, R., & Guyer, J. J. (2024). Changing attitudes in favor
of a pro-environmental proposal from a minority group: The self-validating role of
ingroup versus outgroup sources. Psicothema, 36 (1), 46-54.
Guyer, J. J., Bri帽ol, P., Vaughan-Johnston, T. I., Fabrigar, L. R., Moreno, L., &
Petty, R. E. (2023). Pitch as a Recipient, Channel, and Context Factor Affecting Thought
Reliance and Attitudes: A Self-Validation Analysis. Personality and Social Psychology Bulletin, 0 (0), 1-16.
Nguyen, A., Guyer, J. J., & Fabrigar, L. R. (2021). The influence of confession specificity
and issue intensity on the efficacy of stealing thunder. Journal of Experimental Social Psychology, 97.
Guyer, J. J., Bri帽ol, P., Vaughan-Johnston, T. I., Fabrigar, L. R., Moreno, L., &
Petty, R. E. (2021). Paralinguistic features communicated through voice can affect
appraisals of confidence and evaluative judgments, Journal of Nonverbal Behavior, 45, 479-504.
Vaughan-Johnston, T.L., Guyer, J. J., & Fabrigar, L. R., & Chen, M. (2021). The role
of vocal affect in persuasion: The CIVA model, Journal of Nonverbal Behavior, 45, 455-477.
Horcajo, J., Santos, D., & Guyer, J. J., & Mateos, R. (2020). A meta-cognitive approach
to attitude change regarding doping in sports. Journal of Sports Science, 38 (19), 2242-2252.
Paredes, B., Guyer, J. J., Bri帽ol, P., & Petty, R. E. (2019). Subtle priming of subtraction
vs. addition: A Spill-Over Effect of Math/La inducci贸n sutil de sumar vs. restar:
un efecto indirecto de las matem谩ticas. International Journal of Social Psychology, 34, 590-622.
Horcajo, J., Santos, D., Guyer, J. J., & Moreno, L. (2019). Changing attitudes and
intentions related to doping: An analysis of individual differences in Need for Cognition.
Journal of Sports Science, 37 (24), 2835-2843.
Guyer, J. J., Bri帽ol, P., Petty, R. E., & Horcajo, J. (2019). Non-verbal behavior
of persuasive sources: A Multiple process analysis. Journal of Nonverbal Behavior, 43, 203-231.
Guyer, J. J., Fabrigar, L. R., & Vaughan-Johnston, T. I. (2018). Speech rate, intonation,
and pitch: Investigating the bias and cue effects of vocal confidence on persuasion.
Personality and Social Psychology Bulletin, 45 (3), 389-405.
Letamendia, L. N., Silva, A. C., & Guyer, J. J. (2018). Financial illiteracy, motivations
and barriers to saving and investing by Spanish households. Funcas Social and Economic Studies, 4, 77-97.
Guyer, J. J., Fabrigar, L. R., Vaughan-Johnston, T. I., & Tang, C. (2017). The counter-intuitive
influence of vocal affect on the efficacy of affectively-based persuasive messages.
Journal of Experimental Social Psychology, 74, 161-173.
Book Chapters
Horcajo, J., & Guyer, J. J. (In Press). The role of self-talk and nonverbal behavior
in the context of sports. Handbook of Self-Talk. American Psychological Association, PsycBooks.
Vaughan-Johnston, T. I., Guyer, J. J., & Fabrigar, L. R. (2022). Persuasion and Social
Change. Routledge.
Guyer, J. J., Vaughan-Johnston, T. I., & Nguyen, A. (2022). Stealing Thunder: Empirical Evidence and Real-World Applications. Routledge.
Bri帽ol, P., Petty, R. E., & Guyer, J. J. (2019). A Historical view on attitudes and
persuasion. In Hegarty, P., Logan, C., Long, W., Pettikainen, P., Rutherford, & Rickren,
W. E. (Eds.), Oxford Encyclopedia of the History of Psychology. New York, NY: Oxford University Press.
Guyer, J. J., & Vaughan-Johnston, T. I. (2018). Upward and downward social comparisons:
A brief historical overview. In: Zeigler-Hill V., Shackelford T. (Eds.) Encyclopedia of Personality and Individual Differences, Springer, Cham.
Guyer, J. J., & Fabrigar, L. R. (2015). The attitude-behavior link: A review of the
history. In J. Wright & J. Berry (Eds.), International Encyclopedia of Social and Behavioral Sciences (2nd ed., Vol. 2, pp. 183-189). Elsevier.
Invited Articles in Professional Association Journals
Guyer, J. J. (Feb. 2022). So you want to be persuasive? Start by sounding confident.
Society for Personality and Social Psychology, Character & Context.
Guyer, J. J. (April 2016). The influence of vocally expressed emotions on attitude
change. Canadian Psychological Association, Mind Pad, 4 (2), 21-25.
Guyer, J. J. (Feb. 2016). What you say matters but so does how you say it. Association for Psychological Science Student Observer Notebook, 29 (2).
Conference Presentations: Papers
Patro, G. A., Fabrigar, L. R., Kan, M., & Guyer, J. J. (April 2024). The multiple roles of scarcity as a compliance strategy. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Pham, C., Fabrigar, L. R., Guyer, J. J., & Nguyen, A. (April 2024). The influence of confession specificity. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Shen, M., Fabrigar, L. R., Guyer, J. J., & Vaughan-Johnston, T.I. (April 2024). The effects of vocal speed on information processing and persuasion. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Paredes, B., Bri帽ol, P., Santos, D., Guyer, J. J., Moreno, L., & Petty, R. (April 2023). Attitudes and perceived knowledge guiding behavior: The moderating role of hedonic mindset. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., Bri帽ol, P., Vaughan-Johnston, T. I., Fabrigar, L. R., Moreno, L., Vidal, L., & Petty, R. E. (Jan. 2022). The metacognitive influence of pitch on attitudes as a recipient, channel and context factor. Paper presented at the Lisbon-Madrid Meeting for Attitudes and Persuasion, in Lisbon, Portugal.
Vaughan-Johnston, T. I., Guyer, J. J., Fabrigar, L. R., Bri帽ol, P., & Petty, R. (April 2021). Vocal confidence increases persuasion more when relevant as an argument. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., Bri帽ol, P., Vaughan-Johnston, T. I., Fabrigar, L. R., Vidal, L., Moreno, L., & Petty, R. E. (Oct. 2020). Who said what to whom? Unpacking the metacognitive influence of pitch on persuasion. Paper presented at the Sociedad Cient铆fica Espa帽ola de Psicolog铆a Social conference, in Burgos, Spain.
Guyer, J. J., Bri帽ol, P., Vaughan-Johnston, T. I., Fabrigar, L. R., Vidal, L., Moreno, L., & Petty, R. E. (June 2020). The metacognitive benefits of pitch on persuasion as a source, recipient, and context factor. Paper accepted at the European Association of Social Psychology conference; The Psychology of Attitudes: Social Processes of Evaluation, in Bath, UK. (Conference canceled).
Vaughan-Johnston, T. I., Guyer, J. J., Fabrigar, L. R., & Bri帽ol, P. (April 2020). Vocal confidence can increase persuasion as an argument. Paper accepted at the Midwestern Psychological Association conference, in Chicago, Illinois, USA. (Conference canceled).
Guyer, J. J., Bri帽ol, P., Vaughan-Johnston, T. I., Fabrigar, L. R., Petty, R. E., & Vidal, L. (April 2020). The metacognitive role of vocal confidence in persuasion. Paper accepted at the Midwestern Psychological Association conference, in Chicago, Illinois, USA. (Conference canceled).
Guyer, J. J., Horcajo, J., Santos, D., & Mateos, R. (April 2020). A metacognitive approach to attitude change regarding doping in sports. Paper accepted at the Midwestern Psychological Association conference, in Chicago, Illinois, USA (Conference canceled).
Nguyen, A., Guyer, J. J., & Fabrigar, L. R. (April 2020). Stealing thunder boundary conditions: issue severity and confession specificity. Paper accepted at the Midwestern Psychological Association conference, in Chicago, Illinois, USA. (Conference canceled).
Fabrigar, L. R., Guyer, J. J., Vaughan-Johnston, T. I., Bri帽ol, P., & Petty, R. E. (Feb. 2020). Vocal Confidence and Persuasion: An ELM Perspective. Paper presented at the Attitudes preconference at the Society for Personality and Social Psychology conference, New Orleans, Louisiana, USA.
Guyer, J. J., Bri帽ol, P., Petty, R. E., Vidal, L., & Jeffs-Benavente, J. (Feb. 2020). The Role of Vocal Confidence in Persuasion: A Self-Validation Perspective. Paper presented at the Society for Personality and Social Psychology conference, in New Orleans, Louisiana, USA.
Paredes, B., Santos, D., Guyer, J. J., Bri帽ol, P., & Petty, R. (June 2019). Decisions about job candidates in personal selection settings: The importance of objective and subjective knowledge. Paper presented at the Risk, Uncertainty, and Decisions meeting, in Madrid, Spain.
Guyer, J. J., Fabrigar, L. R., & Vaughan-Johnston, T. I. (April 2019). Speaker confidence differentially influences persuasion based on high/low thinking. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., Horcajo, J., Santos, D., & Moreno, L. (April 2019). Need for cognition moderates attitude-intention correspondence toward doping. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Paredes, B., Bri帽ol, P., Santos, D., Guyer, J. J., Gandarillas, B., & Petty, R. (April 2019). The effect of amount of knowledge on attitudes and attitude strength in a personal selection setting. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Vaughan-Johnston, T. I., Guyer, J. J., & Fabrigar, L. R. (April 2019). Investigating how the interplay between vocal affect and cognitive messages influences persuasion. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., Fabrigar, L. R., & Vaughan-Johnston, T. I. (Nov. 2018). Vocal pitch and persuasion: Investigating the bias and cue effects of vocal confidence. Paper presented at the Lisbon-Madrid Meeting for Attitudes and Persuasion, in Lisbon, Portugal.
Paredes, B., Guyer, J. J., Bri帽ol, P., & Petty, R. E. (Oct. 2018). Correcci贸n del Sesgo Inducida Sutilmente: Revirtiendo el Efecto de la Credibilidad de la Fuente sobre las Actitudes. Paper presented at the Sociedad Cient铆fica Espa帽ola de Psicolog铆a Social conference, in Cuenca, Spain.
Guyer, J. J., Fabrigar, L. R., & Vaughan-Johnston, T. I. (July 2018). Vocal confidence and persuasion: How speech rate affects amount of processing as a function of recipient ability and motivation. Paper presented at the Ohio State University Attitudes conference, in Columbus, Ohio, USA.
Guyer, J. J., Fabrigar, L. R., & Nguyen, A. (April 2018). The influence of confession specificity on the efficacy of stealing thunder. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., Vaughan-Johnston, T. I., & Jain, S. (April 2018). Perceived similarity between objects influences perceptions of scarcity and beyond. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Paredes, B., Guyer, J. J., Bri帽ol, P., Petty, R. E. (April 2018). The impact of math primes on persuasion: Correcting the effects of source credibility on attitudes. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., & Fabrigar, L. R. (April 2017). The effects of affective voice-content congruency on persuasion. Paper presented at the Western Psychological Association conference, in Sacramento, California, USA.
Guyer, J. J., & Fabrigar, L. R. (March 2017). The influence of confession specificity on the efficacy of stealing thunder in a political context. Paper presented at the Southwestern Psychological Association conference, in San Antonio, Texas, USA.
Guyer, J. J., & Fabrigar, L. R. (March 2017). Vocal confidence and persuasion: Speech rate affects amount of processing under moderate elaboration. Paper presented at the Eastern Psychological Association conference, in Boston, Massachusetts, USA.
Guyer, J. J., & Fabrigar, L. R. (Nov. 2016). Investigating the multiple roles of vocal pitch in persuasion. Paper presented at the Society of Southeastern Social Psychologists conference, in Asheville, North Carolina, USA.
Guyer, J. J., & Fabrigar, L. R. (May 2016). The influence of speech rate and intonation on persuasion: Multiple roles of vocal confidence. Paper presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Conference Presentations: Posters
Guyer, J. J., Vaughan-Johnston, T. I., Fabrigar, L. R., Bri帽ol, P., & Petty, R. (Feb. 2021). Vocal confidence can increase and decrease persuasion. Poster presented at the Society for Personality and Social Psychology conference, (Held Online).
Vaughan-Johnston, T. I., Guyer, J. J., Glatt, K., & Fabrigar, L. R. (Feb. 2020). Framing bolsters the reputational benefits of stealing thunder. Poster presented at the Attitude pre-conference at the Society for Personality and Social Psychology conference, in New Orleans, Louisiana, USA.
Guyer, J. J., Horcajo, J., Santos, D., & Mateos, R. (Feb. 2020). A meta-cognitive approach to attitude change regarding doping in sports. Poster presented at the Society for Personality and Social Psychology conference, in New Orleans, Louisiana, USA.
Nguyen, A., Guyer, J. J. Fabrigar, L. R. (Feb. 2019). The benefits of stealing thunder across transgression intensity and confession specificity. Poster presented at the Attitude pre-conference at the Society for Personality and Social Psychology conference, in Portland, Oregon, USA.
Guyer, J. J. Fabrigar, L. R., & Vaughan-Johnston, T. I. (Feb. 2019). Vocal pitch and persuasion: Investigating the bias and cue effects of vocal confidence. Poster presented at the Society for Personality and Social Psychology conference, in Portland, Oregon, USA.
Paredes, B., Guyer, J. J., Bri帽ol, P., & Petty, R. E. (March 2018). The role of subtle primes in bias correction: Reversing the effects of source credibility on attitudes. Poster presented at the Attitude pre-conference at the Society for Personality and Social Psychology conference, in Atlanta, Georgia, USA.
Guyer, J. J., Vaughan-Johnston, T. I., & Fabrigar, L. R. (March 2018). Vocal intonation can influence persuasion by moderating the amount of thinking. Poster presented at the Attitude pre-conference at the Society for Personality and Social Psychology conference, in Atlanta, Georgia, USA.
Guyer, J. J., Fabrigar, L. R., Vaughan-Johnston, T. I., & Tang, C. (March 2018). Source attributes mediate the effects of affective voice-content congruency on persuasion. Poster presented at the Society for Personality and Social Psychology conference, in Atlanta, Georgia, USA.
Guyer, J. J., & Fabrigar, L. R. (April 2017). The influence of confession specificity on the efficacy of stealing thunder in a political context. Poster presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., & Fabrigar, L. R. (Jan. 2017). Vocal confidence and persuasion: Speech rate affects amount of processing under moderate elaboration. Poster presented at the Society for Personality and Social Psychology conference, in San Antonio, Texas, USA.
Guyer, J. J., Fabrigar, L. R., Vaughan-Johnston, T. I., & Terry, G. (June 2016). The influence of scarcity on behavioral intentions: 鈥淐lick, Whirr鈥� tells only half the story. Poster presented at the Canadian Psychological Association conference, in Victoria, British Columbia, Canada.
Guyer, J. J., Maracle, A. C., Vaughan-Johnston, T. I., Seligman, N., & Fabrigar, L. R. (June 2016). The differential interplay of vocal pitch and gender on attitudes. Poster presented at the Canadian Psychological Association conference, in Victoria, British Columbia, Canada.
Guyer, J. J., Fabrigar, L. R., Vaughan-Johnston, T. I., & Seligman, N. (May 2016). Investigating the hypothesized non-linear influence of speech rate on speaker confidence and attitudes. Poster presented at the Association for Psychological Science conference, in Chicago, Illinois, USA.
Guyer, J. J., Fabrigar, L. R., Vaughan-Johnston, T. I., & Seligman, N. (May 2016). The effects of vocal intonation on perceptions of speaker confidence and attitudes. Poster presented at the Association for Psychological Science conference, in Chicago, Illinois, USA.
Guyer, J. J., Maracle, A. C., Fabrigar, L. R., & Kan, M. P. H., & Terry, G. (Jan 2016). The multiple roles of vocal pitch in attitude change. Poster presented at the Society for Personality and Social Psychology conference, in San Diego, California, USA.
Guyer, J. J., Maracle, A. C., Chouchkova, A., & Fabrigar, L. R. (June 2015). The effects of vocal pitch on persuasion as a function of age-based trait perceptions. Poster presented at the Canadian Psychological Association conference, in Ottawa, Ontario, Canada.
Guyer, J. J., & Fabrigar, L. R. (May 2015). Investigating the multiple roles of vocal confidence in attitude change. Poster presented at the Association for Psychological Science conference, in New York, New York, USA.
Guyer, J. J., Fabrigar, L. R., Maracle, A. C., & Chouchkova, A. (May 2015). The persuasive power of vocal pitch and the role of speaker confidence. Poster presented at the Midwestern Psychological Association conference, in Chicago, Illinois, USA.
Guyer, J. J., & Fabrigar, L. R. (Feb. 2015). Matching and mismatching vocal affect with message content: Is the effect real and why might it occur? Poster presented at the Society for Personality and Social Psychology conference, in Long Beach, California, USA.
Guyer, J. J., Fabrigar, L. R., & Maracle, A. C. (Aug. 2014). Pitch, vocal confidence, and the moderating role of age. Poster presented at the American Psychology Association conference, in Washington D.C., USA.
Guyer, J. J., & Fabrigar, L. R., & Tang, C. (Feb. 2014). Matching and mismatching vocal affect with cognitively-based persuasive messages. Poster presented at the Society for Personality and Social Psychology conference, in Austin, Texas, USA.
Guyer, J. J., & Fabrigar, L. R., & Tang, C. (Jan. 2013). Matching and mismatching vocal affect with affectively-based persuasive messages. Poster presented at the Society for Personality and Social Psychology conference, in New Orleans, Louisiana, USA.
Guyer, J. J., & Reichl, A. J. (May 2008). Attitudes in the face of adversity: Differential responses of high and low self-monitors to commitment, normative influence, and argument strength. Poster presented at the Connecting Minds conference, in Vancouver, British Columbia, Canada.
Honors and Awards
Outstanding Excellence in Teaching Award (2019-2024)
IE University, Madrid (29 awards over 6 years)
Faculty Award for Teaching Excellence (2020, 2021)
麻豆传媒 鈥� Madrid Campus
SPSP Teacher/Scholar Conference Registration Award (Sept. 2020)
SPSP Best Online Syllabi (July 2020)
Top three best online syllabi (Learning to Observe, Experiment, and Survey)
Research Scholar Travel Award 鈥� 900 euros / 1500 euros (2019, 2020)
麻豆传媒 鈥� Madrid Campus
SPSP Small Research Grant Award - $1500 USD (Sept. 2019)
The Role of Vocal Confidence in Persuasion: A Self-Validation Perspective
Postdoctoral Research Scholar Travel Award - 1000 euros (April 2019)
Universidad Aut贸noma de Madrid
SPSP Teacher/Scholar Travel Award - $500 USD (Sept. 2017)
Canadian Psychological Association Certificate of Academic Excellence (2016-2017)
Best Doctoral Dissertation
Association for Psychological Science Travel Award - $200 CAD
(May 2016, 2017)
Queen's University Travel Award - $150 CAD (2012-2016)
R.S. McLaughlin Fellowship - $10,000 CAD (Sept. 2014)
Awarded to top three graduate students in psychology department with highest GPA