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Who is motivated to accept a booster and annual dose? A dimensional and person‐centered approach

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Abstract
The transmissibility of new COVID-19 variants and decreasing efficacy of vaccines led authorities to recommend a booster and even an annual dose. However, people's willingness to accept new doses varied considerably. Using two independent longitudinal samples of 4596 (Mean age = 53.6) and 514 (Mean age = 55.9) vaccinated participants, we examined how people's (lack of) vaccination motivation for their first dose was associated with their intention to get a booster (Sample 1) and an annual dose (Sample 2) several months later (Aim 1). We also aimed to capture the impact of the motivational heterogeneity on these intentions by capitalizing on participants' different motivational profiles collected at baseline (Aim 2). Across both samples, autonomous motivation, controlled motivation, and distrust-based amotivation were uniquely related to, respectively, higher, lower, and even lower booster and annual dose intentions. Further, a two-step clustering procedure revealed five profiles, with the profiles characterized by higher autonomous motivation (i.e. Good Quality and High Quantity profiles) reporting the highest vaccination intentions and the profile characterized by the highest number of obstacles (i.e. Global Amotivated profile) yielding the lowest vaccination intentions. These results stress the critical need to support citizens' volitional endorsement of vaccination to harvest long-term benefits with respect to COVID-19.
Keywords
Applied Psychology, booster dose, COVID-19, motivation, vaccination intention, SELF-DETERMINATION THEORY, PHYSICAL-EDUCATION, PROFILES, QUALITY, OUTCOMES

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MLA
Waterschoot, Joachim, et al. “Who Is Motivated to Accept a Booster and Annual Dose? A Dimensional and Person‐centered Approach.” APPLIED PSYCHOLOGY-HEALTH AND WELL BEING, vol. 15, no. 4, 2023, pp. 1293–318, doi:10.1111/aphw.12437.
APA
Waterschoot, J., Van Oost, P., Vansteenkiste, M., Brisbois, M., Schmitz, M., Morbée, S., … Yzerbyt, V. (2023). Who is motivated to accept a booster and annual dose? A dimensional and person‐centered approach. APPLIED PSYCHOLOGY-HEALTH AND WELL BEING, 15(4), 1293–1318. https://doi.org/10.1111/aphw.12437
Chicago author-date
Waterschoot, Joachim, Pascaline Van Oost, Maarten Vansteenkiste, Marie Brisbois, Mathias Schmitz, Sofie Morbée, Olivier Klein, et al. 2023. “Who Is Motivated to Accept a Booster and Annual Dose? A Dimensional and Person‐centered Approach.” APPLIED PSYCHOLOGY-HEALTH AND WELL BEING 15 (4): 1293–1318. https://doi.org/10.1111/aphw.12437.
Chicago author-date (all authors)
Waterschoot, Joachim, Pascaline Van Oost, Maarten Vansteenkiste, Marie Brisbois, Mathias Schmitz, Sofie Morbée, Olivier Klein, Olivier Luminet, Omer Van den Bergh, Eveline Raemdonck, and Vincent Yzerbyt. 2023. “Who Is Motivated to Accept a Booster and Annual Dose? A Dimensional and Person‐centered Approach.” APPLIED PSYCHOLOGY-HEALTH AND WELL BEING 15 (4): 1293–1318. doi:10.1111/aphw.12437.
Vancouver
1.
Waterschoot J, Van Oost P, Vansteenkiste M, Brisbois M, Schmitz M, Morbée S, et al. Who is motivated to accept a booster and annual dose? A dimensional and person‐centered approach. APPLIED PSYCHOLOGY-HEALTH AND WELL BEING. 2023;15(4):1293–318.
IEEE
[1]
J. Waterschoot et al., “Who is motivated to accept a booster and annual dose? A dimensional and person‐centered approach,” APPLIED PSYCHOLOGY-HEALTH AND WELL BEING, vol. 15, no. 4, pp. 1293–1318, 2023.
@article{01HRCP04E15SWCJK1Y35F383R9,
  abstract     = {{The transmissibility of new COVID-19 variants and decreasing efficacy of vaccines led authorities to recommend a booster and even an annual dose. However, people's willingness to accept new doses varied considerably. Using two independent longitudinal samples of 4596 (Mean age = 53.6) and 514 (Mean age = 55.9) vaccinated participants, we examined how people's (lack of) vaccination motivation for their first dose was associated with their intention to get a booster (Sample 1) and an annual dose (Sample 2) several months later (Aim 1). We also aimed to capture the impact of the motivational heterogeneity on these intentions by capitalizing on participants' different motivational profiles collected at baseline (Aim 2). Across both samples, autonomous motivation, controlled motivation, and distrust-based amotivation were uniquely related to, respectively, higher, lower, and even lower booster and annual dose intentions. Further, a two-step clustering procedure revealed five profiles, with the profiles characterized by higher autonomous motivation (i.e. Good Quality and High Quantity profiles) reporting the highest vaccination intentions and the profile characterized by the highest number of obstacles (i.e. Global Amotivated profile) yielding the lowest vaccination intentions. These results stress the critical need to support citizens' volitional endorsement of vaccination to harvest long-term benefits with respect to COVID-19.}},
  author       = {{Waterschoot, Joachim and Van Oost, Pascaline and Vansteenkiste, Maarten and Brisbois, Marie and Schmitz, Mathias and Morbée, Sofie and Klein, Olivier and Luminet, Olivier and Van den Bergh, Omer and Raemdonck, Eveline and Yzerbyt, Vincent}},
  issn         = {{1758-0846}},
  journal      = {{APPLIED PSYCHOLOGY-HEALTH AND WELL BEING}},
  keywords     = {{Applied Psychology,booster dose,COVID-19,motivation,vaccination intention,SELF-DETERMINATION THEORY,PHYSICAL-EDUCATION,PROFILES,QUALITY,OUTCOMES}},
  language     = {{eng}},
  number       = {{4}},
  pages        = {{1293--1318}},
  title        = {{Who is motivated to accept a booster and annual dose? A dimensional and person‐centered approach}},
  url          = {{http://doi.org/10.1111/aphw.12437}},
  volume       = {{15}},
  year         = {{2023}},
}

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