According to the cognitive development theory, children learn to discern cause and effect and begin to understand the views of others in the stage.

According to the cognitive development theory, children learn to discern cause and effect and begin to understand the views of others in the "Concrete operational stage".

The concrete operational stage is the third Piaget's hypothesis of cognitive advancement. This period traverses the time of center childhood and is portrayed by the advancement of logical thought. While kids at this age turn out to be more logical about concrete and particular things, still they battle with abstract thoughts.

Mean is the same thing as averageexamplethe mean of 30 and 40 is 35 because (30+40)/2=70/2=35mean absolue deviation is when you take the mean of the setthen you find the diffference of each number of the set then take the mean of thatex if yo uhave 1,2,3,4,5 and the mean is 3, then ou find the absolute value of the difference of each|1-3|=2|2-3|=1|3-3|=0|4-3|=1|5-3|=2add them and divide by 5(2+1+0+1+2)/5=6/5= mad=6/5

Answerone or two nights of sleep deprivation;