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This major theoretical concept originated because of a ophthalmologist named von Senden (Olson & Hergenhahn, 2009). He conducted a study on adults with hereditary cataracts who gained the ability to see (Olson & Hergenhahn, 2009). The individuals were asked to identify objects such as circles, squares, and triangles, but were unable to (Olson & Hergenhahn, 2009). Austin Riesen conducted a similar study by raising infant monkeys in complete darkness until two years-old (Olson & Hergenhahn, 2009). Riesen found that when the monkeys were taken out of darkness the monkeys continued to act blind, but began to behave normally after a few weeks (Olson & Hergenhahn, 2009). The name of this theoretical concept is this.
What is the restricted environments theory (Olson & Hergenhanh, 2009)?