Six-year-old Demetri and 4-year-old Lucien’s mother gave each boy a glass of juice with their lunch, but Demetri asked her to switch the juice to another taller and narrower glass. After she poured the liquid from the original glass into the tall glass, Lucien said angrily, “Now Demetri gets more juice than me!” Lucien is displaying a lack of

[BLANK-1] refers to biological differences, chromosomes, hormonal profiles, & internal and external sex organs . [BLANK-2] describes the characteristics that a person, society, or culture delineates as masculine or feminine. 

__________ parenting predicts the poorest grades and worsening school performance over time.

Teenage alcohol and drug use rates in the United States have __________ since the mid-1990s.

In Piaget’s theory, during __________, toddlers use their current schemes to interpret the external world.

As Sunni plays, she says: “Where’s the cup? I want the cup. Oh, there it is. Now, I need the spoon.” Sunni is engaging in what researchers now call __________ speech.

Between 6 and 12 years of age, gains in __________ lead to quicker and more accurate movements.

Fathers must work harder to build an attachment with their exclusively breastfed infants because research suggests that feeding is the primary mechanism of attachment. 

According to Erikson, the psychological conflict of the first year is

After being gently scolded for taking a toy away from his cousin, 20-month-old Rainer lowers his eyes, hangs his head, and hides his face with his hands. Rainer is expressing