Özet:

The aim of this study was to develop a scale that measures the sibling relationships of high school students. The Sibling Relationship Scale, was developed in Turkish cultural context accordance with this aim, was presented. Factor analysis, which are done for the validity of SRS, and reliability studies are made from data obtained from 409 high school students.  According to the explanatory factor analysis results, it was determined that SRS is consisted of 4 factor and 23 items, 11 of them reverse. In addition, it was determined that the combined four factors included in the scale explained 65,69% of the total variance. Confirmatory factor analysis that is a proof for construct validity was done by data obtained from 217 high school students. According to confirmatory factor analysis results, model of measurement which tested four factor structure was determined to have adequately goodness of fit index (x2= 06.57; p=0.00; x2/sd=2.28; NFI=.89; CFI =.93; IFI=.93; SRMR=.081 and RMSEA=.077).  Cronbach Alpha Reliability Coefficient relating to all of scale was calculated. (Alpha=.95) And then, split half reliability was determined as rxx= .95. Finally, in accordance with validity and reliability studies of SRS, applicability of the scale was discussed and gave place to some suggestions.

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