All Stories

  1. The BEARS sleep screening tool: Sex, age and circadian typology differences in Spanish adolescents

    Article • Sleep Medicine, November 2025, Elsevier

    Dr Juan F. Díaz-Morales

  2. Individual differences in entrepreneurial tendencies: The impact of self-employment and the Dark Triad

    Article • Acta Psychologica, November 2025, Elsevier

    Dr Juan F. Díaz-Morales

  3. The relevance of morning affect, eveningness and distinctness in regard to the mental health of adolescents

    Article • Chronobiology International, February 2025, Taylor & Francis

    Dr Juan F. Díaz-Morales

  4. Validation of the Morningness–Eveningness Scale for Children (MESC) with ambulatory circadian monitoring of temperature, light exposure and activity

    Article • Journal of Sleep Research, January 2025, Wiley

    Dr Juan F. Díaz-Morales

  5. Matutinidad-Vespertinidad en atletas de élite entre 13 y 16 años

    Article • Revista de Psicología Aplicada al Deporte y el Ejercicio Físico, July 2024, Colegio Oficial de Psicologos de Madrid

    Dr Juan F. Díaz-Morales

  6. Evidence for environment hypothesis: Cross-cultural measurement invariance of the composite scale of morningness across Bangladesh and Spain

    Article • Chronobiology International, August 2023, Taylor & Francis

    Dr Juan F. Díaz-Morales

  7. The influence of a permanent double-shift school start time on adolescent sleep and chronotype across different age groups

    Article • Chronobiology International, May 2023, Taylor & Francis

    Dr Juan F. Díaz-Morales

  8. Chronotype, Time of Day, and Performance on Intelligence Tests in the School Setting

    Article • Journal of Intelligence, January 2023, MDPI AG

    Dr Juan F. Díaz-Morales

  9. Spanish adaptation of the Gender-Related Variables for Health Research (GVHR): Factorial Structure and Relationship with Health Variables

    Article • The Spanish Journal of Psychology, January 2023, Cambridge University Press

    Dr Juan F. Díaz-Morales

  10. Factors Underpinning the Shift to Eveningness during Early Adolescence: Pubertal Development and Family Conflicts

    Article • Journal of Youth and Adolescence, November 2022, Springer Science + Business Media

    Dr Juan F. Díaz-Morales

  11. Birding recreation specialization – A test of the factorial invariance in eight languages

    Article • Journal of Leisure Research, October 2022, Taylor & Francis

    Dr Juan F. Díaz-Morales

  12. The psychometric properties of the Spanish version of the Morningness-Eveningness Stability Scale improved (MESSi) in adolescents

    Article • Chronobiology International, August 2022, Taylor & Francis

    Dr Juan F. Díaz-Morales

  13. Sex differences in the relationship between morningness-eveningness components, mood and well-being among Bangladeshi university students

    Article • Chronobiology International, February 2022, Taylor & Francis

    Dr Juan F. Díaz-Morales

  14. Sleep and Depressive Symptoms in the Morningness/Eveningness-Suicidal Ideation Relationship Depend on School Shift in Mexican Adolescents

    Article • Journal of Clinical Medicine, October 2021, MDPI AG

    Dr Juan F. Díaz-Morales

  15. Bangla version of the composite scale of morningness: factor invariance and validity with sleep habits, mood and mental health

    Article • Biological Rhythm Research, September 2021, Taylor & Francis

    Dr Juan F. Díaz-Morales

  16. Day-of-week mood patterns in adolescents considering chronotype, sleep length and sex

    Article • Personality and Individual Differences, September 2021, Elsevier

    Dr Juan F. Díaz-Morales

  17. Sleep habits and circadian preferences in school-aged children attending a Mexican double-shift school system

    Article • Sleep Medicine, May 2021, Elsevier

    Dr Juan F. Díaz-Morales

  18. Individual differences, personality, social, family and work variables on mental health during COVID-19 outbreak in Spain

    Article • Personality and Individual Differences, April 2021, Elsevier

    Dr Juan F. Díaz-Morales

  19. The Parent’s Chronotype and Child’s Sleeping Quality in Association with Relationship Satisfaction

    Article • Clocks & Sleep, September 2020, MDPI AG

    Prof. Dr. med. Jon Genuneit, Dr Juan F. Díaz-Morales

  20. Sleep habits, circadian preferences and substance use in a Mexican population: the use of the Morningness-Eveningness-Stability-Scale improved (MESSi)

    Article • Chronobiology International, November 2019, Taylor & Francis

    Dr Juan F. Díaz-Morales

  21. Circadian preference and relationship satisfaction among three types of couples

    Article • Chronobiology International, August 2019, Taylor & Francis

    Dr Juan F. Díaz-Morales

  22. Procrastinación: Una Revisión de su Medida y sus Correlatos

    Article • Revista Iberoamericana de Diagnóstico y Evaluación - e Avaliação Psicológica, April 2019, Associacao Iberoamericana de Diagnostico e Avaliacao Psicologica

    Dr Juan F. Díaz-Morales

  23. Sleep timing is linked to sociosexuality: Evidence from German, Polish, Slovak, and Spanish females

    Article • Time & Society, February 2018, SAGE Publications

    Dr Juan F. Díaz-Morales

  24. Age and Sex Differences in Morningness/Eveningness Along the Life Span: A Cross-Sectional Study in Spain

    Article • The Journal of Genetic Psychology, February 2018, Taylor & Francis

    Dr Juan F. Díaz-Morales

  25. Morningness-eveningness is not associated with academic performance in the afternoon school shift: Preliminary findings

    Article • British Journal of Educational Psychology, November 2017, Wiley

    Dr Juan F. Díaz-Morales

  26. Validation of the MESSi among adult workers and young students: General health and personality correlates

    Article • Chronobiology International, September 2017, Taylor & Francis

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  27. Cross-cultural validity of Morningness-Eveningness Stability Scale improved (MESSi) in Iran, Spain and Germany

    Article • Chronobiology International, January 2017, Taylor & Francis

    Dr Juan F. Díaz-Morales

  28. Spanish Adaptation of the Morningness-Eveningness-Stability-Scale improved (MESSi)

    Article • The Spanish Journal of Psychology, January 2017, Cambridge University Press

    Dr Juan F. Díaz-Morales

  29. Gender-Based Perspectives About Women’s and Men’s Health

    Article • January 2017, Elsevier

    Dr Juan F. Díaz-Morales

  30. I will do it tomorrow! Exploring the dimensionality of procrastination in Poland

    Article • Time & Society, December 2016, SAGE Publications

    Dr Juan F. Díaz-Morales

  31. Problematic Facebook use and procrastination

    Article • Computers in Human Behavior, December 2016, Elsevier

    Dr Juan F. Díaz-Morales

  32. Morningness−eveningness correlates with sleep time, quality, and hygiene in secondary school students: A multilevel analysis

    Article • Sleep Medicine, November 2016, Elsevier

    Prof Christoph Randler, Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  33. Morningness–eveningness and sleep habits at school: a comparative study between Mexico and Spain

    Article • Biological Rhythm Research, October 2016, Taylor & Francis

    Dr Juan F. Díaz-Morales

  34. Morningness–eveningness and amplitude – development and validation of an improved composite scale to measure circadian preference and stability (MESSi)

    Article • Chronobiology International, April 2016, Taylor & Francis

    Prof Christoph Randler, Dr Juan F. Díaz-Morales

  35. Sociosexuality, Morningness–Eveningness, and Sleep Duration

    Article • SAGE Open, January 2016, SAGE Publications

    Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  36. Are achievement goals different among morning and evening-type adolescents?

    Article • Personality and Individual Differences, January 2016, Elsevier

    Dr Juan F. Díaz-Morales

  37. Morningness–Eveningness Scale for Children (MESC): Spanish normative data and factorial invariance according to sex and age

    Article • Personality and Individual Differences, December 2015, Elsevier

    Dr Juan F. Díaz-Morales

  38. Anxiety during adolescence: considering morningness–eveningness as a risk factor

    Article • Sleep and Biological Rhythms, December 2015, Springer Science + Business Media

    Dr Juan F. Díaz-Morales

  39. Facebook use and chronotype: Results of a cross-sectional study

    Article • Chronobiology International, October 2015, Taylor & Francis

    Dr Juan F. Díaz-Morales

  40. Synchrony in chronotype and social jetlag between dogs and humans across Europe

    Article • Time & Society, August 2015, SAGE Publications

    Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  41. Social jetlag, academic achievement and cognitive performance: Understanding gender/sex differences

    Article • Chronobiology International, June 2015, Taylor & Francis

    Dr Juan F. Díaz-Morales

  42. Morningness–eveningness and sociosexuality: Evening females are less restricted than morning ones

    Article • Personality and Individual Differences, October 2014, Elsevier

    Dr Juan F. Díaz-Morales, Prof Christoph Randler, Dr Konrad S Jankowski

  43. Consequences of adolescent’s evening preference on school achievement: a review. [Consecuencias de la mayor vespertinidad durante la adolescencia para el funcionamiento psicológico: una revisión]

    Article • Anales de Psicología, October 2014, Servicio de Publicaciones de la Universidad de Murcia

    Dr Juan F. Díaz-Morales

  44. Chronotype and time-of-day effects on mood during school day

    Article • Chronobiology International, August 2014, Informa Healthcare

    Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  45. Chronotype, gender, and time for sex

    Article • Chronobiology International, June 2014, Informa Healthcare

    Prof Christoph Randler, Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  46. Evening adolescents: The role of family relationships and pubertal development

    Article • Journal of Adolescence, June 2014, Elsevier

    Prof Christoph Randler, Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  47. Daily fluctuations in attention at school considering starting time and chronotype: an exploratory study

    Article • Chronobiology International, March 2014, Taylor & Francis

    Dr Juan F. Díaz-Morales

  48. Hemisphere Preference Test: Psychometric properties and relations with academic performance among adolescents

    Article • Laterality Asymmetries of Body Brain and Cognition, March 2014, Taylor & Francis

    Dr Juan F. Díaz-Morales

  49. A Global Look at Time

    Article • SAGE Open, January 2014, SAGE Publications

    Dr Evgeny N. Osin, Dr Juan F. Díaz-Morales

  50. Are self-reported grades a good estimate of academic achievement? / ¿Son las notas auto-informadas una buena estimación del rendimiento académico?

    Article • Studies in Psychology Estudios de Psicología, January 2014, Taylor & Francis

    Dr Juan F. Díaz-Morales

  51. Women would like their Partners to be more Synchronized with them in their Sleep-Wake Rhythm

    Article • The Spanish Journal of Psychology, January 2014, Cambridge University Press

    Prof Christoph Randler, Dr Konrad S Jankowski, Dr Juan F. Díaz-Morales

  52. Morningness and life satisfaction: Further evidence from Spain

    Article • Chronobiology International, October 2013, Taylor & Francis

    Dr Juan F. Díaz-Morales, Prof Christoph Randler, Dr Konrad S Jankowski

  53. Circadian Preference and Thinking Styles: Implications for School Achievement

    Article • Chronobiology International, September 2013, Taylor & Francis

    Dr Juan F. Díaz-Morales

  54. Predicting school achievement: The role of inductive reasoning, sleep length and morningness–eveningness

    Article • Personality and Individual Differences, July 2013, Elsevier

    Dr Juan F. Díaz-Morales

  55. Matutinidad-vespertinidad y ansiedad rasgo en adolescentes

    Article • Anales de Psicología, January 2013, Servicio de Publicaciones de la Universidad de Murcia

    Dr Juan F. Díaz-Morales

  56. Sleep beliefs and chronotype among adolescents: the effect of a sleep education program

    Article • Biological Rhythm Research, August 2012, Taylor & Francis

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  57. Morningness-Eveningness and Health-Related Quality of Life among Adolescents

    Article • The Spanish Journal of Psychology, July 2012, Cambridge University Press

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  58. Morningness/eveningness and school performance among Spanish adolescents: Further evidence

    Article • Learning and Individual Differences, June 2012, Elsevier

    Dr Juan F. Díaz-Morales

  59. Relationship Between Depressive Symptoms and Sleep Duration/Chronotype in Women

    Article • Journal of Individual Differences, January 2012, Hogrefe Publishing Group

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  60. Organizational commitment in Spanish and Italian volunteers: A comparative study

    Article • January 2010, American Psychological Association (APA)

    Dr Juan F. Díaz-Morales

  61. Associations among Sleep, Chronotype, Parental Monitoring, and Pubertal Development among German Adolescents

    Article • The Journal of Psychology, September 2009, Taylor & Francis

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  62. Age and motives for volunteering: Further evidence

    Article • January 2009, American Psychological Association (APA)

    Dr Juan F. Díaz-Morales

  63. An integrated view of personality styles related to avoidant procrastination

    Article • Personality and Individual Differences, October 2008, Elsevier

    Dr Juan F. Díaz-Morales

  64. Indecision and Avoidant Procrastination: The Role of Morningness—Eveningness and Time Perspective in Chronic Delay Lifestyles

    Article • The Journal of General Psychology, July 2008, Taylor & Francis

    Dr Juan F. Díaz-Morales

  65. Morningness-Eveningness in Adolescents

    Article • The Spanish Journal of Psychology, May 2008, Cambridge University Press

    Dr Juan F. Díaz-Morales

  66. Morningness-eveningness and anxiety among adults:

    Article • Personality and Individual Differences, April 2008, Elsevier

    Dr Juan F. Díaz-Morales, Professor M Pilar Sánchez-López

  67. Morningness-Eveningness Among German and Spanish Adolescents 12–18 Years

    Article • European Psychologist, January 2008, Hogrefe Publishing Group

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  68. Morning and evening-types: Exploring their personality styles

    Article • Personality and Individual Differences, September 2007, Elsevier

    Dr Juan F. Díaz-Morales

  69. Frequent Behavioral Delay Tendencies By Adults

    Article • Journal of Cross-Cultural Psychology, July 2007, SAGE Publications

    Dr Juan F. Díaz-Morales

  70. Morningness in German and Spanish students: a comparative study

    Article • European Journal of Personality, June 2007, SAGE Publications

    Dr Juan F. Díaz-Morales, Prof Christoph Randler

  71. Procrastination: Different time orientations reflect different motives

    Article • Journal of Research in Personality, June 2007, Elsevier

    Dr Juan F. Díaz-Morales

  72. Perceptions of Self-concept and Self-presentation by Procrastinators: Further Evidence

    Article • The Spanish Journal of Psychology, May 2007, Cambridge University Press

    Dr Juan F. Díaz-Morales

  73. Validity of the Morningness‐Eveningness Scale for Children among Spanish Adolescents

    Article • Chronobiology International, January 2007, Taylor & Francis

    Dr Juan F. Díaz-Morales

  74. Procrastination and Demographic Characteristics in Spanish Adults: Further Evidence

    Article • The Journal of Social Psychology, October 2006, Taylor & Francis

    Dr Juan F. Díaz-Morales

  75. Factorial Structure of Three Procrastination Scales with a Spanish Adult Population

    Article • European Journal of Psychological Assessment, January 2006, Hogrefe Publishing Group

    Dr Juan F. Díaz-Morales

  76. Composite scales of morningness and preferences

    Article • Ergonomics, March 2005, Taylor & Francis

    Dr Juan F. Díaz-Morales, Professor M Pilar Sánchez-López

  77. Composite and Preferences Scales of Morningness

    Article • The Spanish Journal of Psychology, November 2004, Cambridge University Press

    Dr Juan F. Díaz-Morales, Professor M Pilar Sánchez-López