In addition, low academic user perception quality and satisfaction levels are higher than the highly educated users; (4) different income differences.

另外，低学历用户的感知质量与满意度水平均高于高学历用户；(4)不同收入差异。

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In the past decade, even as income inequality has grown, some of the socioeconomic differences in parenting, like reading to children and going to libraries, have narrowed.

在过去的十年里，尽管收入不平等的现象有所加剧，但在育儿方面的一些社会经济差异，比如为孩子朗读书籍、陪孩子去图书馆，已经在缩小。

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Puzzle play was found to be a significant predictor of cognition after controlling for differences in parents' income, education and the amount of parent talk, Levine said.

莱文说，在控制了父母的收入、教育和交谈量的差异等因素后，发现拼图游戏是预测认知能力的一个重要因素。

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What was particularly disconcerting to Flores was that even when studies were adjusted for such things as income, the differences remained.

VOA: standard.2010.04.07

The researchers broke down the data into race,income and locale and they found even greater differences.

VOA: standard.2010.04.08

The sharp increase in women working over the last 40 years naturally exacerbated these income differences.

FORBES: The Equality Of Reaganomics

And if income differences explain the differences in broadband choices, income-based subsidies are the logical policy instrument.

FORBES: Is the U.S. Losing the Broadband Race? As It Turns Out, We Look a Lot Like Danica Patrick

Another important factor in income differences is education.

FORBES: The Equality Of Reaganomics