Twin Studies

Twin studies can tell us about how genes and environments affect behavioral and physical development. There are two kinds of twins: identical and fraternal. Identical twins result when one fertilized egg splits during the first two weeks of pregnancy. These twins share all their genes and are always of the same sex. They occur in… Continue reading Twin Studies

Structural Equation Modeling

Structural equation modeling (SEM) is a particular form of data analysis. According to this approach, a researcher begins with a model that specifies how multiple variables are related to each other. These theorized relationships are formalized into a set of equations that include the variables in question. These variables are then measured and their relations… Continue reading Structural Equation Modeling

Sociometric Status

Sociometric Status Definition Sociometric status refers to how much a child is liked and noticed by peers. It reflects a broader categorization of peer acceptance than simple friendships. Sociometric categories include popular, rejected, neglected, controversial, and average children. Sociometric status is important because peer relations play a significant role in the social and emotional development… Continue reading Sociometric Status

Social Relations Model

Social Relations Model Definition The social relations model is a theoretical and statistical approach to studying how people perceive others. Although investigations of person perception have a long history in social psychology, early methodological approaches relied on research participants reporting their perceptions of fictitious others who were described in brief stories. The social relations model… Continue reading Social Relations Model

Semantic Differential

Semantic Differential Definition The semantic differential is a method of measurement that uses subjective ratings of a concept or an object by means of scaling opposite adjectives to study connotative meaning of the concept or object. For example, the first level meaning of a car is that of a transportation device; the second level meaning… Continue reading Semantic Differential