
Keith Stanovich used this idea to describe how early acquiring of reading skills leads to later successes in reading as the learner grows, while failing to learn to read before the third or fourth year of schooling may be indicative of lifelong problems in learning new skills.
This may be occurring because children who fall behind in reading would read less, increasing the overall gap between them and their peers.
Later, when students need to read in order to learn new information, their reading difficulty will create difficulty in most other subjects.
In this way they fall further and further behind in school, and ultimately dropping out at a much higher rate than their peers.