The purpose of this study is to investigate association of data collectors' differences with the differences in reliability and validity of scores regarding affective variables (motivation toward science learning and science attitude) that are measured by Likert-type scales. Four researchers trained in data collection and seven science teachers…

Children's ever-increasing and autonomous engagement with the internet exposes them to online risks, especially when parental supervision is limited. Furthermore, media coverage highlighting negative online experiences increases adults' risk perceptions, which in turn jeopardize children's sustainable and beneficial engagement with the internet.…

The purpose of the present study is to examine the initial psychometric properties of the Values Scale for adults. While developing the first stage of the Values Scale, open-ended data on the values held by 216 university students were obtained. During the second stage, the validity and reliability studies of the 60-item Values Scale obtained by…