Van Leeuwen 2008

What is assortative mating?

• The transfer of genetic information from genes to another generation

• The way a group of people within a society tend to learn and pass on information

• When individuals with similar genes or observable characteristics mate with each other more frequently

1. What was the primary focus of the study?

• 1. Assessing the influence of cultural transmission on IQ levels.

• 1. Investigating the genetic factors contributing to intelligence.

• 1. Comparing the IQ levels of identical and non-identical twins.

• 1. Analyzing the effects of environmental factors on cognitive abilities.

2. What is the main objective of using the Raven's Standard Progressive Matrices (RSPM) test in the study?

• 2. To measure crystallized intelligence in adults.

• 2. To determine the influence of environmental factors on intelligence.

• 2. To assess fluid intelligence and cognitive abilities.

• 2. To evaluate the impact of cultural transmission on IQ scores.

3. How did researchers assess whether participants were identical or non-identical twins?

• 3. Through interviews with the participants.

• 3. By analyzing the participants' DNA collected through cheek swabs.

• 3. By evaluating the participants' cognitive test scores.

• 3. By examining their birth certificates.

According to the study's conclusions, what is the primary influence on IQ level?

• Cultural transmission

• Environmental factors

• Genetic factors

• Social homogamy

6. Which term better explains spousal resemblance, according to the study's results?

• 6. Phenotypic assortment

• 6. Cultural transmission

• 6. Gene-environment correlation

• 6. Gene-environment interaction

7. What does the term "genotype-environment interaction" refer to in the study?

• 7. The interaction between genetic and environmental factors on IQ levels.

• 7. The impact of cultural transmission on intelligence.

• 7. The influence of assortative mating on cognitive abilities.

• 7. The role of social homogamy in shaping intelligence.

What research method did the study primarily use to assess intelligence and its heritability?

• Experimental research

• Observational research

• Twin family design

• Case studies

9. What is the main difference between the IQ scores of twins and siblings, as indicated by the study?

• 9. Twins have higher IQ scores than siblings.

• 9. Siblings have more similar IQ scores than twins.

• 9. Siblings have a wider range of IQ scores compared to twins.

• 9. There is no significant difference in IQ scores between twins and siblings.