Which of the following refers to a specific alteration to the baseline condition designed to change the response rate that was initially observed?

__________ is the best available predictor of infant survival and healthy development

A) Ultrasound B) Apgar score C) Maternal age D) Birth weight

Higher IQ scores in children are associated with home environments

a. that provide more opportunities. c. where a father is absent. b. that include few toys. d. where both parents work outside the home.