Background: Questionable research practices (QRPs) have been identified as a driving force of the replication crisis in the field of psychological science. The aim of this study was to assess the frequency of QRP use among psychology students in Canadian universities, and to better understand reasons and motivations for QRP use.Method: Participants were psychology students attending Canadian universities and were recruited via online advertising and university email invitations to complete a bilingual survey. Respondents were asked how often they and others engaged in seven QRPs. They were also asked to estimate the proportion of psychology research impacted by each QRP and how acceptable they found each QRP. Data were collected through Likert-scale survey items and open-ended text responses between May 2020 and January 2021, and was analyzed using descriptive statistics and thematic analysis. Results: 425 psychology students completed the survey. The sample consisted of 40% undergraduate students, 59% graduate students and 1% post-doctoral fellows. Overall, 64% of participants reported using at least one QRP, while 79% reported having observed others engaging in at least one QRP. The most frequently reported QRPs were p-hacking (46%), not submitting null results for publication (31%), excluding outcome measures (30%), and hypothesizing after results are known (27%). These QRPs were also the most frequently observed in others, estimated to be the most prevalent in the field, and rated as the most acceptable. Qualitative findings show that students reported that pressures to publish motivated their QRP use, with some reporting that certain QRPs are justifiable in some cases (e.g., in the case of exploratory research). Students also reported that QRPs contribute to the replication crisis and to publication bias and offered several alternatives and solutions to engaging in QRPs, such as gaining familiarity with open science practices. Conclusions: Most Canadian psychology students in this sample report using QRPs, which is unsurprising since they observe such practices in their research environment and estimate that they are prevalent. In contrast, most students believe that QRPs are not acceptable. The results of this study highlight the need to examine the pedagogical standards and cultural norms in academia that may promote or normalize QRPs in psychological science, to improve the quality and replicability of research in this field.