Dr Young Is Comparing the Intelligence Quotient of Children Coming

Dr Young is comparing the Intelligence Quotient of children coming from country X and children coming from country Y. She is using a laptop for the subscale of Mental Reasoning. Children are asked to complete a series of computer-based tasks and performance is calculated based on reaction times. Results show a main effect of country on Mental Reasoning, whereby children from country Y are significantly slower than children from country X. However, Dr Young didn't consider the fact that children from culture Y have been exposed to computers less frequently than the other children. Her findings show a clear example of __________.

A) Experimenter bias
B) Cultural bias
C) Alpha bias
D) Beta bias