Traffic accident rates have been found to ________ after the spring change to daylight savings time and to ________ after the fall change back to standard time.

The ability of young infants to make fine discriminations between sounds is particularly important in the development of their ability to understand __________

a) language b) noise c) voices d) syntax

The most typical approach to measure efficiency in thinking is ______.

a. interviews b. correct/incorrect answers c. brain activity d. reaction time