What type of stimuli did Hermann Ebbinghaus use in his memory experiments?

Julie finds that the number of hours she

sleeps each night is related to the scores she receives on quizzes the next day. As her sleep approaches 8 hours, her quiz scores improve; as her sleep drops to 5 hours, her quiz scores show a similar decline. Julie realizes that ________. a) there is a negative correlation between the number of hours she sleeps and her quiz grades b) there is a positive correlation between the number of hours she sleeps and her quiz grades c) her low quiz scores are caused by sleep deprivation the night before a quiz d) she should sleep about 10 hours a night to ensure 100 percent quiz grades

Each of the following seems to be a positive influence of infant-directed speech except

a. helping infants segment words from the continuous stream of speech. b. helping infants learn the meaning of words. c. helping infants learn how to have a simple conversation. d. helping infants learn to distinguish familiar from unfamiliar people.