Question 1

According to E. Gibson, the hallmarks of psychological development are:

Typically, infants master action systems in which order:

Prospectivity refers to:

When caregivers present a "still face" infants typically:

Looking is an action system because it involves:

A common element in the development of looking, reaching, and locomotion is the reliance of each action system on:

How much experience of tracking a moving object boosts 4-month-olds performance to that of 6-month-olds when tested with an object moving behind an occluder?

At 3-4 months infants' ability to keep the eyes on a moving target predicts:

Researchers estimate that infants have made over 2.5 million eye movements by what age?

Spontaneous movements by the fetus begin around:

When 2-8-month-old infants' arm flails activated a slide show their expressions showed:

Reaching appears at different ages for different postures (lying on their backs, propping on forearms in a prone position, and sitting upright) because of:

The development of reaching depends on:

Around the time that infants begin to sit independently they also:

Practice manipulating objects with the help of "sticky mittens" boosts pre-reaching infants' performance in skills assessing:

Which infants are more proficient in their first weeks on hands and knees?

The normal age range for walking is:

The strongest predictor of improvements in infants' walking skills is:

Crawling infants spend how much of their waking day on the floor engaged in balance and locomotion?

When infants first learn to walk they: