If a psychologist interested in the effects of smell on concentration has 20 participants perform a standard task while exposed to an unpleasant smell and another 20 participants perform the same task without being exposed to the unpleasant smell,

Chantal, who is about 15 months old, asks her Aunt Kelsey to pick her up. She says, "Up,

peaz." Her aunt replies, "Yes, I will pick you up please." Her aunt's reply is an example of which of the following aspects of child-directed sp a. Pairing of words with objects that are familiar to the child b. Making careful distinctions between similar sounds c. Imitating the child's speech but in a more complex form d. Reference to a tangible object e. Speaking in a language that the child can understand

According to longitudinal and experimental studies, what effects does lower quality sleep have on children psychologically?

Fill in the blank with correct word.