An expert team of scientists compared 1,000 sets of monozygotic twins reared by their biological parents (caspi et al., 2004). the researchers asked the mothers to describe each twin. descriptions ranged from very positive to very negative. the researchers measured personality at age 5 (including antisocial behavior as reported by kindergarten teachers) and then measured each twin's personality two years later. the results revealed that
a. if mothers were more negative toward one of their twins, that twin became more antisocial at age 7 than at age 5
b. if mothers were less negative toward one of their twins, that twin became more antisocial at age 7 than at age 5
c. if mothers were more negative toward one of their twins, that twin became less antisocial at age 7 than at age 5
d. that there was no relation between maternal negativity and child antisocial behavior.

Asociologist wants to study a culture that occurs in some women’s prisons: “state families,” in which individual prisoners take on certain roles within a group of like-minded prisoners. there is previous evidence that younger prisoners will use older inmates who play the roles of grandparents as a resource before they will turn to staff for and advice. the lieutenant in charge of a dorm of long-term prisoners offers to gather volunteers to speak to the researcher and also offers to vouch for the integrity of the researcher. the use of this staff is: a valid use of a statistical technique referred to “snowball sampling” wherein the inclusion of the first subject leads to the recruitment of another one subject. a useful tactic in obtaining a sample of prisoners who both meet the criteria and who will be honest with the researcher. wrong and is prohibited; subject selection needs to be free from intervention by prison authorities or prisoners. acceptable only when the researcher’s irb grants a special waiver.

Which states universal prekindergarten has been most effective in preparing children for school?

According to the article,"social credit" is question 3 options: an experiment to people talk on-line a farming experiment that hurt people under mao ze dong using someone else's data from the internet, to give or take away things such as the right to buy an airline ticket a credit you get in china for having friends in real life, and not just on social media