The difference between the average IQ of children reared in middle-class families and those reared in poverty-level families widens steadily with increasing age. This pattern is referred to as a __________ .

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The Answer of The difference between the average IQ of children reared in middle-class families and those reared in poverty-level families widens steadily with increasing age. This pattern is referred to as a __________ .

The Difference Between the Average IQ of Children Reared in Middle-Class