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Abstract: The subjects of this experiment consisted of primary school children from the 1st, 3rd and 5th grades, aged 7—8, 9—10 and 11—12 years respectively, with 45 children in each grade. The children's memory for pictorial and verbal materials showed the following characteristics:1. For both pictorial and verbal materials, the quantity and accuracy of retention improve with the age levels.2. With all class levels, memory for pictorial materials is always superior to that for verbal materials. The lower the class level, the more striking is this difference.3. Scores for memorizing concrete verbal materials are higher than that for memorizing abstract verbal materials, this difference decreasing with the advancing class levels.4. Only a small portion of the 1st grade pupils can make use of "attempt to recall" as a method for memorization, while some children of the 3rd grade use associations and classifications as methods for memorization. Children of the 5th grade are capable of consciously employing all the above-mentioned methods in memorizing the test materials.

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