Özet:

The aim of this study is to develop a scale with psychometric properties on secondary school students on the subject of developmental mindset beliefs theorized by Dweck (1986, 1999, 2006) and his students (Blackwell et al. 2007; Paunesku et al., 2015; Yeager & Dweck, 2012). Scale data; It was obtained from a total of 1213 students studying in four different secondary schools in a province in the Western Black Sea Region of Turkey in the 2020-2021 academic year. There were 556 participants in the exploratory factor analysis (EFA) process and 657 participating secondary school students in the confirmatory factor analysis (CFA). According to the EFA preliminary analysis, the KMO value was found to be .848 and the Bartlett sphericity test to be significant at the .01 level (χ2=1649,016, df= 45, p=.00). The two-factor structure that emerged according to the results of the exploratory factor analysis was able to explain 55.233% of the total variance. As a result of the analyzes, the 9-item two-factor structure labeled with the concepts of fixed and developmental mentality was confirmed as a result of CFA studies. When the goodness-of-fit indices related to CFA are examined, the two-factor 9-item scale model is PCMIN/DF (=2,452), GFI (=.979), RMSEA (=.047), CFI (=.984), NFI (=.974), Excellent with IFI (=.984); It was also found to have good agreement with the RMR (=.058). In other words, the two-factor hypothesis model put forward by EFA was confirmed by CFA. The Cronbach alpha reliability coefficient for the whole scale was .85; .85 for the first sub-dimension (growth mindset) and .81 for the second sub-dimension (fixed mindset). In the light of the present findings, its psychometric properties have been examined, and it can be said that the "Development-Oriented Mindset Beliefs Scale", which is a 9-item 6-point Likert form called fixed mindset and developmental mindset, is a valid and reliable measurement tool that can measure the "implicit mindset beliefs" of secondary school students.

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