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What percentage of all conceptions abort spontaneously, with most occurring before the pregnancy is detected?

Kevin’s parents have set the rule that he must clean up his toys every night as part of his bedtime routine. One night, he fell asleep before he cleaned up. He woke up crying after he realized that he didn’t put his toys away before bedtime. What stage is Kevin illustrating?

Studies of transgender children who have delayed socially transitioning report increased rates of ______.

Which term refers to the tendency to focus on one part of a stimulus or situation and exclude all others?

A benefit of breast-feeding for mothers is a lower rate of ______.

What characteristic do preschoolers who are raised by permissive parents tend to exhibit?

Genes can be described as ______.

At what age does a child’s brain reach 90% of its adult weight?

The placenta allows the exchange of nutrients, oxygen, and wastes through the ______.

Why is it important to avoid emphasizing differences between groups regarding IQ scores?