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How much education children get is strongly associated with the wealth and social status of their parents. In social science jargon, this is socioeconomic status, or SES. But the SES of parents has little influence on whether children who have graduated from college go on to yet more education. One study looked at whether college graduates took the graduate admissions tests for business, law, and other graduate programs. The effects of the parents' SES on taking the LSAT test for law school were "both statistically insignificant and small." (a) What does "statistically insignificant" mean? (b) Why is it important that the effects were small in size as well as insignificant?

Short Answer

Expert verified
Statistically insignificant means the result could be due to chance. Small effects indicate negligible real-world impact.

Step by step solution

01

Understanding Statistical Significance

Statistical significance refers to the likelihood that a result or relationship is caused by something other than mere random chance. When results are statistically insignificant, it means that any observed correlation or effect could very likely be due to random variation in the data, suggesting no reliable effect or relationship exists between the variables in question.
02

Interpreting Small Effect Size

Effect size measures the strength or magnitude of a relationship or outcome, independent of sample size. A small effect size indicates that any observed relationship or effect is minor or weak. Therefore, even if an effect were statistically significant, a small effect size might indicate that the relationship or influence is practically negligible.
03

Combining Insignificance and Small Effect

When both statistical insignificance and small effect size are present, it suggests that not only is there insufficient evidence to confirm a real effect or influence, but also that the influence, if it exists, is so minimal that it may not have practical implications or importance in making decisions or forming policies.
04

Importance of Both Aspects in SES Influence

In the context of the LSAT study, it is important to note both the statistical insignificance and small effect size of SES because they jointly indicate that parental SES does not have a meaningful impact on whether college graduates decide to take the LSAT. This makes it clear to researchers and policymakers that factors other than SES may play a more crucial role in this decision.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Socioeconomic Status
Socioeconomic Status (SES) is a combined measure that reflects an individual's economic and social position relative to others. It is often determined by examining a variety of factors, including income level, education, and occupation. SES plays a significant role in educational attainment, as children from higher SES families generally have more resources and opportunities to pursue education. However, the influence of parental SES diminishes when it comes to advanced education decisions, such as enrolling in graduate programs. The study of SES provides valuable insights into how social inequalities impact educational outcomes and broader life chances, but as evidence suggests, SES may not always directly dictate future choices like taking the LSAT.
Effect Size
Effect size is a statistical term that quantifies the magnitude of the relationship between two variables, often used in the context of hypothesis testing. Unlike statistical significance, which merely tells us whether an effect exists, effect size informs us of the size of the effect. A small effect size in the context of SES and LSAT indicates that even if a relationship were statistically proven, the impact of SES on deciding to take the LSAT is negligible. Understanding effect size is crucial because it helps researchers and policymakers determine the practical relevance of their findings, beyond statistical significance.
  • A large effect size indicates a substantial impact.
  • A small effect size suggests a minor or weak impact.
Regardless of statistical significance, effect size is vital for understanding the true implications of research results.
Graduate Education
Graduate education refers to programs of study that follow the completion of a bachelor's degree, including master's and doctoral programs. Deciding to pursue graduate education involves various factors, including career goals, personal interests, and financial considerations. The decision to take entrance exams, such as the LSAT for law school, can be influenced by many factors other than the socioeconomic status of one's parents. Graduates often weigh the perceived benefits, costs, and the personal importance of further education. The shift in influence from SES to other factors could suggest graduates are making more independent choices based on personal aspirations or market demands rather than parental status.
Understanding these dynamics is essential for educators and policymakers to address barriers to higher education access and success.
LSAT
The LSAT, or Law School Admission Test, is a standardized test required for law school admission in the United States and Canada. It assesses skills deemed necessary for success in law school and includes sections on reading comprehension, logical reasoning, and analytical thinking. While parental SES might have a significant impact on undergraduate education, its influence might not be extended to graduate level decisions, such as taking the LSAT. This can be due to myriad reasons such as individuals having greater autonomy over their educational path post-college or the accessibility of resources designed to support LSAT preparation, irrespective of parental support. Understanding the factors that motivate the decision to take the LSAT can help law schools and educators to better target support services and ensure fair opportunities for applicants from diverse backgrounds.

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