Module 63

Heritability relates to the

• percentage of a person’s intelligence that is due to

  environmental infl uences.

• percentage of a person’s intelligence that is due to

  genetics.

• percentage of a person’s intelligence that is due to

  genetics.

• extent to which variability among individuals’

  intelligence scores can be attributed to genetic

  variation.

The correlation between the IQ scores of fraternal twins

raised together is lower than IQ scores of identical twins

raised together. What conclusion can be drawn from this

data?

• Nothing, because the type of twin has not been held

  constant.

• Nothing, because there is no comparison between

  twins and adopted children.

• Nothing, because cultural differences have not been

  considered.

• There is a genetic effect on intelligence.

Which of the following is true of the mental similarities

between adoptive children and their adoptive parents as

they age?

• Adoptive children become much more similar to

  their adoptive families over time.

• Adoptive children become slightly more similar to

  their adoptive families over time.

• Adoptive children become slightly less similar to

  their adoptive families over time.

• Adoptive children become much less similar to their

  adoptive families over time.

According to Carol Dweck, students are often hampered

by a “fixed mindset.” This means they believe:

• intelligence is biologically set and unchangeable.

• it is never good to change your mind once it is made

  up.

• intelligence can be “repaired” by doing specifi c

  mental exercises.

• they have already done everything they can to

  improve.