Background: Plagiarism is an ethical and academic issue, which is affected by several factors.
Objectives: This study is an attempt to introduce a model for elaborating on the causes of plagiarism in Iran.
Research design: The study was carried out as a grounded theory study.
Participants and research context: Data were collected through in-depth semi-structured interviews with 32 university professors and postgraduate students at Iranian universities of medical sciences. The participants were selected through purposeful and theoretical sampling. Data analysis was done following Strauss et al.'s work. To ensure study rigor, Lincoln and Guba's measures were used.
Ethical considerations: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Results: A conceptual model of the causes of plagiarism was developed based on analyzing and coding the data. The main core of the model was the emergence of plagiarism, and other cores were (1) causal condition: lack of skills, pressure by education system, and lack of awareness; (2) intervening factors: technological advances, legal gaps, and lack of efficient supervision; (3) ground factors: personal traits and attitudes of the academic community; (4) strategy and interventions: role model, supervision, national/international coordination, and higher awareness; (5) outcomes: regeneration of plagiarism and negative attitudes toward Iranian authors in the world academic communities.
Conclusion: Several factors affect plagiarism. Among the approaches to attenuate plagiarism in Iranian academic communities are improving self-esteem and self-efficacy in Iranian researchers, emphasizing on quality rather than quantity of published works, discouraging boasting attitudes in the practitioners, denouncing intense competition among researchers, and introducing clear laws and severe punishments for plagiarism.
Keywords: Grounded theory; Iran; plagiarism; reasons.