Variable ratio
Among the reinforcement schedules, variable ratio is the most productive and the most resistant to extinction. Fixed interval is the least productive and the easiest to extinguish (Figure 1).
Okay so, the pros about positive self-esteem are that you are saying that you are doing good and you are basically motivating yourself to do it. And the cons to it are that you may not be able to do something and do good on it but you do it and possibly end up getting fired or something. The pros about positive self-esteem are that you may be able to dodge a bullet, that is a term meaning like if there was something bad, you just avoided it. The cons are that you are turning yourself down.
Answer: Although school-age children have the lowest infection prevalence of any age ... cognitive function and short-term memory in schoolchildren and have reduced ... The focus here is on ill health and malnutrition at school age and the role of the ... opinion to describe the nature and effectiveness of school health programs.
Explanation: