Screen, teen, and pychological well-being. In a tudy of three nationally repreentative largecale data et from Ireland, the United State, and the United Kingdom (n ), teenager between the age of 12 to 15 were aked to keep a diary of their creen time and anwer quetion about how they felt or acted. The anwer to thee quetion were then ued to compute a pychological well-being core. Additional data were collected and included in the analyi, uch a each child' ex and age, and on the mother' education, ethnicity, pychological ditre, and employment. The tudy concluded that there i little clear-cut evidence that creen time decreae adolecent well-being. (a) What type of tudy i thi?
(b) Identify the explanatory variable. (c) Identify the repone variable. (d) Comment on whether the reult of the tudy can be generalized to the population, and why. (e) Comment on whether the reult of the tudy can be ued to etablih caual relationhip