Özet:

This study aims to investigate how university students' information literacy self-efficacy perception is influenced by their Facebook and Wikipedia literacy levels, school year, gender, second language level and weekly Internet usage duration by using decision tree method. The researchers purposefully collected data from 2776 students from 11 faculties of Dokuz Eylul University. The first part of the data collection instrument included questions about university students’ characteristics such as Wikipedia and Facebook literacy levels, school year, gender, second language level and weekly Internet usage duration. The second part was related to information literacy self-efficacy. The most important result of the study was that Facebook and Wikipedia literacy rather than university students’ other characteristics were the first rank independent variables explaining information literacy self-efficacy. In addition, female students whose Wikipedia literacy level was at an advanced level were 16.4% of the sample and these students had the highest information literacy selfefficacy perception among the sample

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