The answer is "variable-ratio schedule".
In operant conditioning, a variable-ratio plan refers to a calendar of fortification where a reaction is strengthened after an eccentric number of reactions. This timetable makes an enduring, high rate of reacting. Betting and lottery diversions are great cases of a reward in view of a variable ratio schedule.
It is the scientific study of human society and social relationships. It's also the subject within the field of social science, such as economics or politics. Hope this helps you!
Answer:
preoperational; concrete operations
Explanation:
Jean Piaget has given the theory of cognitive development in which he has mentioned four different stages including sensorimotor, preoperational, concrete operational, and formal operational.
Preoperational stage: This is the second stage in the cognitive development theory and starts from the age of two years and lasts through seven years of age in a child's stage. At this stage, a child is being engaged in manipulating symbols and symbolic play.
Concrete Operational Stage: This stage is the third stage and starts at seven years of age and lasts through eleven years of a child's life. In this stage, a child is engaged in using logical operations or thought and therefore the child can put logic only to physical objects.