Ecstasy is chemically similar to ______

Which of the following statements is supported by research on abnormal crying?

A) The cries of brain-damaged babies are often shrill, piercing, and shorter in duration than those of healthy infants. B) Colic generally subsides between 8 and 12 months. C) Colic is usually a sign of central nervous system damage. D) Infants who have experienced prenatal and birth complications tend to have persistent, low-pitched cries.

When the scores in a distribution are positively skewed, the mean will have a value _____

a. lower than the median b. higher than the median c. equal to the median d. either higher or lower than the median, depending on the value of the mode