Final answer:
A child deliberately coordinating schemes to solve problems is engaging in cognitive skills for decision-making, reflecting the cognitive development as described by Jean Piaget. This marks a movement from heuristic-based thinking to more analytical and effortful problem-solving strategies.
Step-by-step explanation:
A child who is coordinating schemes deliberately to solve simple problems is engaging in cognitive skills to make decisions. This stage of thought process aligns with the development described by Jean Piaget, where children use schemata formed from interacting with their environment to organize information, in the form of assimilation and accommodation, thus enhancing their problem-solving abilities.
These advanced cognitive processes reflect the movement from a heuristic-based or automated thinking approach to a more intentional, effortful, and analytical strategy for problem-solving. According to cognitive psychology, such intentional coordination of schemes to tackle issues marks the evolution of a child's thought processes, stepping away from reliance on automatic cognition or mere algorithm following towards a deeper understanding and internalization of concepts.