Richard's developmental psychology class finds a positive correlation between the height and weight of the class members. A class member asks, "What does early nutrition have to do with this finding?" This class member has stumbled onto what issue associated with correlations?

The third-variable problem

Explanation:

The third variable problem refers to the fact that a causal relationship between two variables cannot be inferred from the naturally occurring correlation between them because of the ever present possibility of third variable correlation.

Also, the third variable is the entire cause of the correlation between the two variables of interest and there's no causal relationship between them at all but the key difference between experiments and correlational studies concerns the variable that is thought to be the cause.

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.

"harry t. moore (1905-1951) – civil rights activist, leader, and the first martyr of the civil rights movement. fannie lou hamer (1917–1977) – leader in the american civil rights movement; co-founder of the national women's political caucus and freedom democratic party. james farmer (1920–1999) – congress of racial equality."