Answer:
While Ali is still developing his object permanence, he would notice the absence as he realizes he can no longer feel the stuffed animal.
Long wars take more effect onto our economy. Supporting our troops across sea, getting them food, ammo and any other supplies. Long periods of time is going to take even more supplies. It is also keeping our men and women away longer giving them more chance of getting injured.
External validity
Sigmund freud's psychoanalytic theory was based primarily on descriptive data from a few case studies. Critics question how well the experiences of these unusual individuals represent others. The concern referred to is that this type of research may lack external validity.
External validity is the extent to which the information and theories of a study can be generalized to other conditions or to other people. People, places and times are the three major threats ( factors that could be wrong) to external validity
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Test the two animals by putting them in the same area and timing the speed for each spot they make it to meaning.. Mark a spot and have a split time for each spot
