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From motivation to mediterranean diet intention and behavior: a combined self-determination theory and theory of planned behavior approach.

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Title: From motivation to mediterranean diet intention and behavior: a combined self-determination theory and theory of planned behavior approach.
Authors: Canova, Luigina (AUTHOR), Capasso, Miriam (AUTHOR), Bianchi, Marcella (AUTHOR), Caso, Daniela (AUTHOR)
Source: Psychology & Health. Jul2026, Vol. 41 Issue 7, p971-997. 27p.
Subjects: Prediction models, Mediterranean diet, Autonomy (Psychology), Sex distribution, Questionnaires, Research methodology evaluation, Descriptive statistics, Structural equation modeling, Chi-squared test, Motivation (Psychology), Longitudinal method, Intention, Health behavior, Research, Psychology of college students, Affect (Psychology), Data analysis software, Factor analysis
Abstract: Objective: The Mediterranean diet (MD) is recognized as one of the healthiest and most sustainable dietary patterns worldwide. This study combines the Theory of Planned Behavior (TPB) and Self-Determination Theory (SDT) alongside past MD adherence behavior to predict MD adherence among young and adult Italians. Methods and measures: Using a two-wave prospective design, 706 participants (Women = 60.5%, mean age = 31.82) completed measures of past behavior, SDT and TPB variables at baseline (T1) and reported their adherence behavior to MD two weeks later (T2). Results: Results revealed that both intention and past adherence to MD predicted actual adherence. In turn, affective attitude, descriptive norm, perceived behavioral control (PBC), and autonomous motivation were positively associated with intention. Past adherence further predicted autonomous motivation, affective attitude, and PBC, and indirectly influenced MD adherence at T2 through its effect on these factors and intention. Finally, invariance tests showed no differences between women and men and between student and non-student samples. Conclusion: Overall, our findings support the integration of TPB and SDT, emphasizing the need for interventions that address both conscious decision-making and established dietary habits, acknowledging the multifaceted nature of dietary behavior change. [ABSTRACT FROM AUTHOR]
Copyright of Psychology & Health is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Psychology and Behavioral Sciences Collection
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  Data: From motivation to mediterranean diet intention and behavior: a combined self-determination theory and theory of planned behavior approach.
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  Data: <searchLink fieldCode="AR" term="%22Canova%2C+Luigina%22">Canova, Luigina</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Capasso%2C+Miriam%22">Capasso, Miriam</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Bianchi%2C+Marcella%22">Bianchi, Marcella</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Caso%2C+Daniela%22">Caso, Daniela</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Psychology+%26+Health%22">Psychology & Health</searchLink>. Jul2026, Vol. 41 Issue 7, p971-997. 27p.
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  Data: <searchLink fieldCode="DE" term="%22Prediction+models%22">Prediction models</searchLink><br /><searchLink fieldCode="DE" term="%22Mediterranean+diet%22">Mediterranean diet</searchLink><br /><searchLink fieldCode="DE" term="%22Autonomy+%28Psychology%29%22">Autonomy (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Sex+distribution%22">Sex distribution</searchLink><br /><searchLink fieldCode="DE" term="%22Questionnaires%22">Questionnaires</searchLink><br /><searchLink fieldCode="DE" term="%22Research+methodology+evaluation%22">Research methodology evaluation</searchLink><br /><searchLink fieldCode="DE" term="%22Descriptive+statistics%22">Descriptive statistics</searchLink><br /><searchLink fieldCode="DE" term="%22Structural+equation+modeling%22">Structural equation modeling</searchLink><br /><searchLink fieldCode="DE" term="%22Chi-squared+test%22">Chi-squared test</searchLink><br /><searchLink fieldCode="DE" term="%22Motivation+%28Psychology%29%22">Motivation (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Longitudinal+method%22">Longitudinal method</searchLink><br /><searchLink fieldCode="DE" term="%22Intention%22">Intention</searchLink><br /><searchLink fieldCode="DE" term="%22Health+behavior%22">Health behavior</searchLink><br /><searchLink fieldCode="DE" term="%22Research%22">Research</searchLink><br /><searchLink fieldCode="DE" term="%22Psychology+of+college+students%22">Psychology of college students</searchLink><br /><searchLink fieldCode="DE" term="%22Affect+%28Psychology%29%22">Affect (Psychology)</searchLink><br /><searchLink fieldCode="DE" term="%22Data+analysis+software%22">Data analysis software</searchLink><br /><searchLink fieldCode="DE" term="%22Factor+analysis%22">Factor analysis</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Objective: The Mediterranean diet (MD) is recognized as one of the healthiest and most sustainable dietary patterns worldwide. This study combines the Theory of Planned Behavior (TPB) and Self-Determination Theory (SDT) alongside past MD adherence behavior to predict MD adherence among young and adult Italians. Methods and measures: Using a two-wave prospective design, 706 participants (Women = 60.5%, mean age = 31.82) completed measures of past behavior, SDT and TPB variables at baseline (T1) and reported their adherence behavior to MD two weeks later (T2). Results: Results revealed that both intention and past adherence to MD predicted actual adherence. In turn, affective attitude, descriptive norm, perceived behavioral control (PBC), and autonomous motivation were positively associated with intention. Past adherence further predicted autonomous motivation, affective attitude, and PBC, and indirectly influenced MD adherence at T2 through its effect on these factors and intention. Finally, invariance tests showed no differences between women and men and between student and non-student samples. Conclusion: Overall, our findings support the integration of TPB and SDT, emphasizing the need for interventions that address both conscious decision-making and established dietary habits, acknowledging the multifaceted nature of dietary behavior change. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Psychology & Health is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1080/08870446.2025.2496228
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 27
        StartPage: 971
    Subjects:
      – SubjectFull: Prediction models
        Type: general
      – SubjectFull: Mediterranean diet
        Type: general
      – SubjectFull: Autonomy (Psychology)
        Type: general
      – SubjectFull: Sex distribution
        Type: general
      – SubjectFull: Questionnaires
        Type: general
      – SubjectFull: Research methodology evaluation
        Type: general
      – SubjectFull: Descriptive statistics
        Type: general
      – SubjectFull: Structural equation modeling
        Type: general
      – SubjectFull: Chi-squared test
        Type: general
      – SubjectFull: Motivation (Psychology)
        Type: general
      – SubjectFull: Longitudinal method
        Type: general
      – SubjectFull: Intention
        Type: general
      – SubjectFull: Health behavior
        Type: general
      – SubjectFull: Research
        Type: general
      – SubjectFull: Psychology of college students
        Type: general
      – SubjectFull: Affect (Psychology)
        Type: general
      – SubjectFull: Data analysis software
        Type: general
      – SubjectFull: Factor analysis
        Type: general
    Titles:
      – TitleFull: From motivation to mediterranean diet intention and behavior: a combined self-determination theory and theory of planned behavior approach.
        Type: main
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            NameFull: Canova, Luigina
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            NameFull: Capasso, Miriam
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            NameFull: Bianchi, Marcella
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            NameFull: Caso, Daniela
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          Dates:
            – D: 01
              M: 07
              Text: Jul2026
              Type: published
              Y: 2026
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