The paragraph discusses the issue of student engagement in the classroom using Skinner's theory of behavior, which emphasizes the role of reinforcement in shaping actions. According to this theory, if certain behaviors are not rewarded, they are likely to fade over time. In the context of the classroom, when students attend class but do not show interest in the lessons—opting instead to socialize and ignore the instruction—it indicates a lack of motivation.
The paragraph suggests that students do not find immediate benefits in actively participating in the lesson, such as receiving praise, earning good grades, or feeling a sense of achievement. As a result, they might choose more enjoyable activities, like chatting with friends, over engaging with the lesson. The underlying message is that if teachers are unsuccessful in motivating students or providing positive reinforcement for participation and effort, students will have little incentive to change their behavior and will likely continue to disengage. Essentially, without acknowledgment or reward for their efforts, students are less likely to invest in their learning.