Piaget and other infant researchers had to develop different techniques (such as hiding toys under blankets) to study the thinking of infants because infants lack skills.

verbal

Explanation:

According to my research on studies conducted on child development, I can say that based on the information provided within the question this is done because infants lack verbal skills. Since infants cannot express their thoughts or how they are feeling, researchers need to develop techniques in order to understand their thoughts and feelings.

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    racial conflict and discrimination has existed ever since man learned to kill with rocks and bones. these conflicts arose from disputes between territory, power, wealth, religion, or simple difference. some of the most infamous racial disputes include slavery, the holocaust, and the civil rights movement.

    these listed disputes often resulted in casualties from all sides. riots, wars, imprisonment, and lynching are all commonly associated with racial conflict on severe levels.

      however, racism is an improving issue in recent decades. people are being more accepting and welcoming of diverse populations. though, the world isn't perfect and it will take much more time, if ever, until the world is rid of racism.