1.which of the following body parts actually over shoots adult levwls in childho

Question

1.which of the following body parts actually over shoots adult levwls in childhood and then declines to adlut levels later in adolescence?
a. muscluar system
b. lymphoid system
c. the head and brain
d. skeletal system

2. the preoperational child is characterized by?
a. logical, concrete, and noabstract thinking
b. symbolic, intuitive and agocentric thinking
c. logical, abstract, and egocentric thinking
d. introspective and abstract thinki g

3. a correlation exists when
a. two varibles are related to each other
b. two varibles have the same underlying case
c. two varibles are affexted by a third varible
d. a cause and effexr realtionship exists between two varibles

Explanation / Answer

1. b Lymphoid System

Lymphatic system in 7-18 years usually is more productive than any other age. It is 1.5 to 1.8 times more active in this period than in adolescence or adulthood.

2. b Symbolic, intuitive and egocentric.

Pre-operational cognitive development in a child refers to the stage between 2 and 7 years. It is the second stage in Piaget's theory of development. This stage is characterised by engagement in symbolic play, manipulating them, learning languages, role-play and development of egocentrism.

3. a When the variables are related to each other.

Correlation is a measure of how two variables are related to each other. This can be Causal (having a cause and effect relationship) or non-causal and random. Correlation only speaks about the amount of noise in the relation. Having a correlation does not necessarily imply that they lie in the same case. It also doesn't speak about how another variable effects the two variables in consideration.

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