This topic contains a solution. Click here to go to the answer

Author Question: During the past century and a half, the average age of menarche in the United States has plummeted. ... (Read 116 times)

dollx

  • Hero Member
  • *****
  • Posts: 558
During the past century and a half, the average age of menarche in the United States has plummeted. This is an example of:
 
  a. proximodistal growth. c. secular trend.
  b. cephalocaudal growth. d. the effects of excessive estrogen.

Question 2

According to Piaget's cognitive-developmental theory:
 
  a. children develop the skills that lead to object permanence by 3 months of age.
  b. children develop an understanding of object permanence all at once.
  c. children come to understand object permanence even without prior experience.
  d. children develop object permanence before they develop emotional bonds to specific caregivers.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Kjones0604

  • Sr. Member
  • ****
  • Posts: 327
Answer to Question 1

C

Answer to Question 2

D




dollx

  • Member
  • Posts: 558
Reply 2 on: Jun 22, 2018
Wow, this really help


Dnite

  • Member
  • Posts: 297
Reply 3 on: Yesterday
Excellent

 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

For a complete list of videos, visit our video library