A2013 study (luby, et al) looked at three variables that mediate the impact poverty on hippocampus volume: parental education, parenting style and stressful life events. they found that parental education was not correlated with hippocampus volume. this finding was important because in this study, the variable, "parental education," served as a proxy for intelligence, an individual differences variable which is considered to have a genetic component. the lack of a relationship ruled out a rival hypothesis that the size of a child's hippocampus is

the result of inherited ability

Explanation:

Inherited ability refers to the type of ability that can be passed by the parents to the children through genetics.

If the size of hippo campus is determine by genetic,children that are born from intelligent parents should be guaranteed to also have bigger hiccoughs. Since there is no correlation between the two, we can conclude that environmental factors play a crucial role in determining the size of hippocampus.

the united states constitution is the supreme law of the united states. the constitution, originally comprising seven articles, delineates the national frame of government. its first three articles embody the doctrine of the separation of powers, whereby the federal government is divided into three branches: the legislative, consisting of the bicameral congress; the executive, consisting of the president; and the judicial, consisting of the supreme court and other federal courts. articles four, five and six embody concepts of federalism, describing the rights and responsibilities of state governments, the states in relationship to the federal government, and the shared process of constitutional amendment. article seven establishes the procedure subsequently used by the thirteen states to ratify it. it is regarded as the oldest written and codified national constitution in force.