Professor Rashad is interested in studying cognitive development. He collects and compares data from a group of 6 year olds and 10 year olds. Five years later, he compares these two groups to each other again as well as to their own performance in the study five years ago. What type of research design?

Prior to 6 months of age, infants around the world are able to differentiate the phonemes of all languages, but between 6 to 12 months of age they begin to differentiate ________.

a) only the phonemes associated with their native language b) approximately only 5 to 10 phonemes associated with their native language c) approximately only 2 to 4 phonemes associated with their native language d) only the phonemes not associated with their native language

Most human traits are influenced by more than one gene

Indicate whether this statement is true or false.