What is/are some methodological problems that confound results of the studies that use twin children to address the causal connection between parental education and their children's education? Select all.

A. On average, twin children obtain lower than their parents' educational level.
B. twin children are more likely to have the same environmental experiences, in addition to sharing 100 % DNA.
C. twin children tend to have difficult temperament which makes them difficult to study
D. twin children tend to differ from the general population of children in birth weight (i. e., lower than non-twin babies).

B. Twin Children are more likely to have the same environmental experiences, in addition to sharing 100% DNA

D. Twin children tend to differ from the general population of children in birth weight (i.e., lower than non-twin babies).

Explanation:

ne pare rău, dar când mi-am căutat întrebarea, doar avioanele au apărut .. deci, ar putea fi răspunsul, sau ar putea fi baloane cu aer cald, deoarece acestea pot conta și ca ambarcațiunile de aer, dar nu sunt complet sigur de asta. a fost doar o presupunere, sper că am ajutat, îmi pare rău dacă nu am făcut-o. de asemenea, folosesc traducerea google, pentru a traduce ceea ce spun în engleză, așa că îmi pare rău dacă gramatica sau chiar limba nu este corectă