Hi, How Can We Help You?
  • Address: 1251 Lake Forest Drive New York
  • Email Address: assignmenthelpcentral@gmail.com

Blog

Assignment Help Central   →  Blog Large Image   →  Blog   →  Intelligence Predicts Grades
June 26, 2025

Intelligence Predicts Grades

Author By Academic Wizard Categories Blog

Intelligence Predicts Grades

Find and read a peer-reviewed research journal article using intelligence or achievement testing in research and share what you learned from this article with your classmates. Specifically (and in your own words):

Intelligence Predicts Grades

1. Why was the study conducted?  What hypotheses were being tested?,

2. What test(s) were used?,

3. What findings were reported, and what conclusions were drawn,

  1. Why was the study conducted and what were its hypotheses?,

  2. Which intelligence tests were used?

  3. What findings were reported?

  4. What conclusions did the researchers draw?

  5. What implications does the study have for practice?

Intelligence Predicts Grades

✅ Comprehensive Answer:

1. Why the study was conducted & hypotheses:
Researchers Gygi et al. examined how well four commonly used intelligence tests—the IDS, RIAS, SON‑R 6‑40, and WISC‑IV—predict later academic performance in children en.wikipedia.org+8frontiersin.org+8pubmed.ncbi.nlm.nih.gov+8. The hypothesis: all four tests would significantly forecast overall school grades three years later, and that specific tests would be better predictors in subjects like math and language.

2. Tests Used:

  • IDS (Intelligence and Development Scales): a fluid-intelligence test for ages 5–10.

  • RIAS (Reynolds Intellectual Assessment Scales): measures both verbal and nonverbal intelligence for ages 3–90+.

  • SON‑R 6‑40: nonverbal test for fluid intelligence, ages 6–40.

  • WISC‑IV (Wechsler Intelligence Scale for Children, Fourth Edition): global IQ assessment for ages 6–16 frontiersin.org+1pubmed.ncbi.nlm.nih.gov+1.

3. Findings Reported:

  • All four tests predicted average school grades over three years.

  • IDS and RIAS scores were significant predictors of both math and language grades.

  • SON‑R 6‑40 specifically predicted math performance.

  • WISC‑IV did not predict math or language grades individually—only the composite grades frontiersin.org+1pubmed.ncbi.nlm.nih.gov+1.

Intelligence Predicts Grades

4. Conclusions Drawn:
The study concluded that intelligence test scores do offer valid predictive insight into later academic achievement, particularly when averaged across subjects. However, the effectiveness differs depending on the test and the discipline: IDS and RIAS had stronger subject-level predictive power, while WISC‑IV was less precise in forecasting specific subject outcomes researchgate.net+8frontiersin.org+8pubmed.ncbi.nlm.nih.gov+8. The authors did caution that the small sample size (n=54 at follow-up) limits the generalizability of their conclusions.

5. Practice Implications:
For practitioners, the results suggest choosing intelligence tests aligned with the desired predictive outcome. If anticipating performance in particular areas like math or language, IDS or RIAS may be more accurate. In educational planning or early intervention, test selection matters. The study also highlights the need to combine IQ data with other factors—motivation, learning environment, working memory—to better understand academic trajectories.

📌 Summary:

This longitudinal study supports using intelligence tests to help forecast academic achievement, with IDS and RIAS showing stronger subject-specific accuracy. However, small sample size and test design nuances limit definitive conclusions. For practical use, IQ testing is valuable—but should be paired with broader

1. Why was the study conducted?  What hypotheses were being tested?, 2. What test(s) were used?, 3. What findings were reported, and what conclusions were drawn, Which intelligence tests were used?, Why was the study conducted and what were its hypotheses?