(References marked with an asterisk indicate studies included in the meta-analysis.)

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Akobeng. A. K. (2005). Understanding systematic reviews and meta-analysis. Archives of Disease in Childhood, 90, 845–8.

*Aremu, A. O., Williams, T. M., & Adesina, F. T. (2011). Influence of academic procrastination and personality type on academic achievement and efficacy on in-school adolescents in Ibadan. IFE PsychologIA, 191, 93-113.

*Atalayin, Ç., Balkıs, M., Tezel, H., & Kayrak, G. (2018). Procrastination and predictor  variables among a group of dental students in Turkey. Psychology, Health and Medicine, 236, 726-732. 

*Balkıs, M. (2013). Academic procrastination, academic life satisfaction, and academic achievement: The mediation role of rational beliefs about studying. Journal of Cognitive and Behavioral Psychotherapies, 13(1), 57-74.

Balkıs, M., & Duru, E. (2009). Prevalence of academic procrastination behavior among pre-service teachers, and its relation with demographics and individual preferences [Akademik erteleme davranışının öğretmen adayları arasındaki yaygınlığı, demografik özellikler ve bireysel tercihlerle ilişkisi]. Journal of Theory and Practice in Education / Eğitimde Kuram ve Uygulama, 5(1), 18–32.

*Balkıs, M., & Duru, E. (2017). Gender differences in the relationship between academic procrastination, satisfaction with academic life and academic performance. Electronic Journal of Research in Educational Psychology, 15(1), 105-125. https://doi.org/10.14204/ejrep.41.16042

*Balkıs, M., Duru, E., & Buluş, M. (2013). Analysis of the relation between academic procrastination, academic rational/irrational beliefs, time preferences to study for exams, and academic achievement: a structural model. European Journal of Psychology of Education, 28(3), 825-839. https://doi.org/10.1007/s10212-012-0142-5

*Batool, S. S. (2019). Academic achievement: Interplay of positive parenting, self-esteem, and academic procrastination. The Australian Psychological Society, 72, 174-187. https://doi.org/10.1111/ajpy.12280

Beutel M. E, Klein, E. M., Aufenanger, S., Brähler, E., Dreier, M., Müller, K. W, Quiring, O., Reinecke, L., Schmutzer, G., Stark, B., & Wöfling, K. (2016). Procrastination, distress and life satisfaction across the age range – A German representative community study. PLoS ONE, 11(2), 1-12. https://doi.org/10.1371/journal.pone.0148054

Burka, J. B., & Yuen, L. M. (2008). Procrastination: Why you do it, what to do about it now. Da Capo Press.

*Borekci, C., & Uyangor, N. (2018). Family attitude, academic procrastination and test anxiety as predictors of academic achievement. International Journal of Educational Methodology, 4(4), 219-226. https://doi.org/10.12973/ijem.4.4.219

Chu, A. H. C., & Choi, J. N. (2005). Rethinking procrastination: Positive effects of ‘active’ procrastination behavior on attitudes and performance. The Journal of Social Psychology, 145(3), 245-264. https://doi.org/10.3200/SOCP.145.3.245-264

*Clariana, M., Gotzens, C., Del Mar Badia, M., & Cladellas, R. (2012). Procrastinacion y engano academico desde la secundaria hasta la universidad [Procrastination and cheating from secondary school to university]. Electronic Journal of Research in Educational Psychology, 10(2), 737-754.

*Cosnefroy, L., Fenouillet, F., Mazé, C., & Bonnefoy, B. (2018). On the relationship between the forethought phase of self-regulated learning and self-regulation failure. Issues in Educational Research, 28(2), 329-348.

De Paola, M., & Scoppa, V. (2015). Procrastination, academic success and the effectiveness of a remedial program (IZA Discussion Paper No. 8021). https://file:///Users/user/Downloads/dp8021%20(1).pdf

Demeter, D., & Davis, S. (2013). Procrastination as a tool: Exploring unconventional components of academic success. Creative Education, 4(7A2), 144-149. https://doi.org/10.4236/ce.2013.47A2018

Dinçer, S. (2014). Eğitim bilimlerinde uygulamalı meta-analiz. Pegem Akademi.

Dunn, K. E., Rakes, G. C., & Rakes, T. A. (2014). The influence of perfectionism and achievement goal orientation on procrastination in online graduate students [Paper presentation]. The American Educational Research Association Conference, Philadelphia, United States.

Ellis, A., & Knaus, W. J. (1977). Overcoming procrastination. Institute for Rational Living.

Ferrari J. R. (2010). Still procrastinating: The no regrets guide to getting it done. John Wiley and Sons.

Ferrari, J. (2017, May 8). Are you a procrastinator? Here’s how you’re helping online scammers. Guardian.

Ferrari, J. R., Johnson, J. L., & McCown, W. G. (1995). Procrastination and task avoidance: Theory, research, and treatment. Plenum Press

Ferrari, J., & Tice, D. (2000). Procrastination as a self-handicap for men and women: A task-avoidance strategy in a laboratory setting. Journal of Research in Personality, 34(1), 73-83. https://doi.org/10.1006/jrpe.1999.2261.

Flett, G. L., Hewitt, P. L., & Martin, T. R. (1995). Dimensions of perfectionism and procrastination. In J. R. Ferrari, J. L. Johnson, & W. G. McCown (Eds.), Procrastination and task avoidance (pp. 71-96). Springer.

*Goroshit, M. (2018). Academic procrastination and academic performance: An initial basis for intervention. Journal of Prevention and Intervention in the Community, 46(2), 131-142. https://doi.org/10.1080/10852352.2016.1198157

Gustavson, D. E., & Miyake, A. (2017). Academic procrastination and goal accomplishment: A combined experimental and individual differences investigation. Learning and Individual Differences, 54, 160–172. https://doi.org/10.1016/j.lindif.2017.01.010

Hayat, A. A., Jahanian, M., Bazrafcan, L., & Shokrpour, N. (In Press). Prevalence of academic procrastination among medical students and its relationship with their academic achievement. Shiraz E-Medical Journal Online, 1-7. https://doi.org/10.5812/semj.96049

He, S. (2017). A multivariate investigation into academic procrastination of university students. Open Journal of Social Sciences, 5, 12-24. https://doi.org/10.4236/jss.2017.510002

Hussain, I., & Sultan, S. (2010). Analysis of procrastination among university students. Procedia - Social and Behavioral Sciences, 5, 1897-1904. https://doi.org/10.1016/j.sbspro.2010.07.385

Joubert, C. P. (2015). The relationship between procrastination and academic achievement of high school learners in North West province, South Africa [Unpublished master’s thesis]. University of South Africa.

Kennedy, G. J., & Tuckman, B. W. (2013). An exploration into the influence of academic and social values, procrastination, and perceived school belongingness on academic performance. Social Psychology of Education, 16(3), 435–470. https://doi.org/10.1007/s11218-013-9220-z.

Kim, R. K., & Seo, H. E. (2015). The relationship between procrastination and academic performance: A meta-analysis. Personality and Individual Differences, 82, 26–33. https://doi.org/10.1016/j.paid.2015.02.038.

Klassen, M. R., Ang, R. P., Chong, W. H., Krawchuk, L. L., Huan, V. S., Wong, I. Y. F., & Yeo, L. S. (2010). Academic procrastination in two settings: Motivation correlates, behavioral patterns, and negative impact of procrastination in Canada and Singapore. Applied Psychology, 59(3), 361- 379.

*Kljajic, K., & Gaudreau, P. (2018). Does it matter if students procrastinate more in some courses than in others? A multilevel perspective on procrastination and academic achievement. Learning and Instruction, 58, 193-200. https://doi.org/10.1016/j.learninstruc.2018.06.005.

Knaus, W. (2002). The procrastination workbook. New Harbinger Publications

*Kurtovic, A., Vrdoljak, G., & Idzanovic, A. (2019). Predicting procrastination: The role of academic achievement, self-efficacy and perfectionism. International Journal of Educational Psychology, 8(1), 1-26. https://doi.org/10.17583/ijep.2019.2993

Lay, C. H. (1986). At last, my research article on procrastination. Journal of Research in Personality, 20(4), 474 – 495.

Lay, C. H. (2004). Some basic elements in counseling procrastinators. In H. C. Schouwenburg, C. H. Lay, T. A. Pychyl, & J. R. Ferrari (Eds.) Counseling the procrastinator in academic settings 43–58. American Psychological Association.

Lakshminarayan, N., Potdar, S., & Reddy, S. G. (2013). Relationship between procrastination and academic performance among a group of undergraduate dental students in India. Journal of Dental Education, 77(4), 524-528. https://doi.org/10.1002/j.0022-0337.2013.77.4.tb05499.x

*Lee, J., Bong, M., & Kim, S. (2014). Interaction between task values and self-efficacy on maladaptive achievement strategy use. Educational Psychology, 34(5), 538-560, https://doi.org/ 10.1080/01443410.2014.895296

*Macher, D., Paechter, M., Papousek, I., & Ruggeri, K. (2012). Statistics anxiety, trait anxiety, learning behavior, and academic performance. European Journal of Psychology of Education, 27(4), 483-498. https://doi.org/10.1007/s10212-011-0090-5

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*Mouratidis, A., Michou, M., & Vassiou, A. (2017). Adolescents’ autonomous functioning and implicit theories of ability as predictors of their school achievement and week-to-week study regulation and well-being. Contemporary Educational Psychology, 48, 56-66. https://doi.org/10.1016/j.cedpsych.2016.09.001

*Michinov, N., Brunot, S., Le Bohec, O., Juhel, J., & Delaval, M. (2011). Procrastination, participation, and performance in online learning environments. Computers and Education, 56(1), 243-252. https://doi.org/10.1016/j.compedu.2010.07.025

Nwosu, K. C., Okoyoe, C. C., & Onah, U. H. (2018). An interpretive descriptive study of factors affecting academic achievement of underachieving student teachers in Nigeria. Journal of At-Risk Issues, 21(2), 20-29.

*Ocal, K. (2016). Predictors of academic procrastination and university life satisfaction among Turkish sport schools students. Educational Research and Reviews, 11(7), 482-490. https://doi.org/10.5897/ERR2016.2645

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Onwuegbuzie, A. J. (2004). Academic procrastination and statistics anxiety. Assessment and Evaluation in Higher Education, 29(1), 3-19.

*Pinxten, M., De Laet, T., Soom, C. V., Peeters, C., & Langie, G. (2019). Purposeful delay and academic achievement. A critical review of the Active Procrastination Scale. Learning and Individual Differences, 73, 42-51. https://doi.org/10.1016/j.lindif.2019.04.010

Rothblum, E. D., Solomon, L. J., & Murakami, J. (1986). Affective, cognitive and behavioral differences between high and low procrastinators. Journal of Counseling Psychology, 33(4), 387-394.

*Sæle, R.G., Dahl, T. I., Sørlie, T., & Friborg, O. (2017). Relationships between learning approach, procrastination and academic achievement amongst first-year university students. Higher Education, 74(5), 757-774.

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*Yurtseven, N., & Akpur, U. (2018). Perfectionism, anxiety and procrastination as predictors of EFL academic achievement: A mixed methods study. Novitas-ROYAL (Research on Youth and Language), 122, 96-115.