Final answer:
The integration factor in cognitive development refers to the process of combining different acts and skills to form more complex cognitive abilities and plans. It contributes to cognitive maturation.
Step-by-step explanation:
The integration factor in cognitive development refers to the process of combining or bringing together various acts and skills to form more complex cognitive abilities and plans. It is the integration of different cognitive processes and higher-order combinations that contribute to cognitive maturation. This integration allows individuals to develop more advanced cognitive abilities and problem-solving skills.