This person was among those who pioneered psychological measurement. Among other contributions, he was possibly the first to popularize the notion that the heritability of psychological traits could be assessed by looking at identical and fraternal twins.

A. Francis Galton
B. Alfred Binet
C. Charles Spearman
D. Theodore Simon

This person was among those who pioneered psychological measurement. Among other contributions, he was possibly the first to popularize the notion that the heritability of psychological traits could be assessed by looking at identical and fraternal twins.

A. Francis Galton

Explanation:

Francis Galton was born in 1822. He had many professions. He was statitian, pstchologist, sociologist, etc. He created the concept of correlation and he apply stathistical methods to the study of human differences and inheritance of intelligence. As it is said in here he popularized the notion that the heritability of psychological traits could be assessed by looking at identical and fraternal twins. He published a book in 1869 called Hereditary Genius.

answer; postconventional;

it might look like that the ideal way to research the health effects of trans fats is through a controlled experimental feeding trial. but these kinds of trial have several important limitations that the researcher must look into:

short in duration (this factor usually checks up on the intermediary risk factors rather than the actual outcomes of the disease)

limited dietary changes

only makes use of healthy participants