Genes and Environment Interactions: The Canalization Principle

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What is a key difference between monozygotic and dizygotic twins regarding intelligence scores?

Monozygotic twins have more similar intelligence scores than dizygotic twins at all ages.

What can be inferred about the heritability of intelligence based on the study of monozygotic twins?

It increases over time, showing that genes have a stronger influence on intelligence with age.

What does the information provided suggest about the heritability of personality traits like extroversion and introversion?

Many personality traits, including extroversion and introversion, have a moderate genetic influence.

Based on the text, what can be concluded about the influence of shared environment on behavior?

Nonshared environmental influences are more important than shared environmental influences.

Which type of twins are used to study the influence of genetic factors on behavior in family studies?

Monozygotic twins

What do family studies aim to determine about behavior?

The contribution of genetic factors to behavior

In twin studies, what can differences between monozygotic and dizygotic twins help researchers understand?

The role of genetic factors in shaping behaviors

What conclusion can be drawn from the information provided about mental illnesses and behavioral disorders?

"People do not inherit behavioral disorders, instead they inherit predispositions to develop certain illnesses or patterns of behavior."

"The influence of genes on IQ appears to be greater with age," based on this statement, what can be said about genetic influence as individuals grow older?

"Genetic influence on IQ strengthens with age."

According to the continuity perspective in human development, which statement best describes the view on changes in characteristics?

Changes happen gradually without sudden shifts in functioning

Which of the following best characterizes the discontinuity perspective in human development?

Development entails abrupt changes leading to advanced functioning

In the context of human development theories, what is a key feature of discontinuity according to the text?

Qualitative transformations across successive stages

Which of the following best exemplifies a quantitative change in human development according to the continuity perspective?

Gradual increase in the level of a characteristic over time

What distinguishes the discontinuity perspective from the continuity perspective in terms of human development?

Quality of changes across various stages of development

Which theory is mentioned as an example of the discontinuity perspective in human development?

Freud's psychosexual stages of development

What is a common characteristic of developmental stages in the discontinuity perspective?

Specific set of abilities unique to each stage

How do discontinuity theorists view the progression through developmental stages?

As involving distinct sets of abilities at different qualities

Explore the basic concepts of genes and environment interactions, focusing on the Canalization Principle in genetic predispositions and patterns of becoming ill. Learn about how genes and environment contribute to traits, and how genes can influence some traits more than others.

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