Describe what is known about the development of right- and left-handedness both in the United States and across the world

What will be an ideal response?


Handedness emerges during infancy, usually by two to three months of age. You can test this by placing a rattle or another toy in the infant's hand. If you place it in the infant's right hand, he or she will generally hold the rattle longer than if you place it in the left hand. Although handedness may be influenced somewhat by the environment, the consistently high percentage of right-handedness around the world and even amongst other species (such as parrots) strongly suggests that handedness is due to wiring within the brain. Left-handedness is associated with language problems (such as dyslexia), stuttering, and even health problems such as allergies. On the other hand, it is also associated with creativity and mathematical ability.

Psychology

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Amanda's baby is awake and squirming around, oblivious to anything happening around her. Amanda's baby is most likely in the ____ state

a. alert inactivity b. crying c. waking activity d. REM

Psychology

Lettie is underweight and has insulin injections. Which one of the following is her most likely

diagnosis? a. Type 1 diabetes b. Type 2 diabetes c. Asthma d. Allergies

Psychology

List and give an example of each of the three types of grandparent relationships discussed in your text

What will be an ideal response?

Psychology

An extreme example of violating ethical guidelines occurred in the 1940s when U.S. researchers deliberately injected thousands of Guatemalans with sexually transmitted infections (STIs) such as:

A) chlamydia. B) gonorrhea and syphilis. C) HIV. D) HPV.

Psychology