- A score bump from taking a similar test again, even without “getting smarter.” Manuals sometimes discuss retest intervals.
- Near: same task family.
- For a licensed evaluation, follow the psychologist’s rules.
- Careful reviews are mixed-to-sceptical for far IQ gains.
- Chunking and device quirks can look like capacity.
- Run visual 2-back lite twice a week apart.
What is a practice effect?
A score bump from taking a similar test again, even without “getting smarter.” Manuals sometimes discuss retest intervals. Prática — não é um QI clínico.
Near versus far transfer?
Near: same task family. Far: dissimilar tests or daily life. Far is the claimed miracle and the usual disappointment. Prática — não é um QI clínico.
Should I avoid practice to stay “pure”?
For a licensed evaluation, follow the psychologist’s rules. For this site, practice is the point of a toy — just do not rename it IQ. Prática — não é um QI clínico.
Does working-memory training raise IQ?
Careful reviews are mixed-to-sceptical for far IQ gains. Treat viral before/after screenshots as ads. Prática — não é um QI clínico.
Strategy versus capacity?
Chunking and device quirks can look like capacity. That is still practice/strategy. Prática — não é um QI clínico.
What to try?
Run visual 2-back lite twice a week apart. The second run is partly memory of the toy. Prática — não é um QI clínico.
❓ As pessoas também perguntam
What is construct validity?
Construct validity is the argument that a score reflects a named idea — working memory, not “being clever in general.” It is built from theory, patterns of correlations, and failed rival explanations. A 20-trial number-Stroop lite can feel like control. Feeling is not a validity coefficient. This site never reports a licensed IQ. Prática — não é um QI clínico.
What is construct validity? →What is criterion validity?
Criterion validity asks whether a score lines up with something you care about that is not the test itself — a later grade, a supervisor rating, or a Wechsler index. Concurrent means measured at the same time; predictive means later. A visual 2-back lite has no published criterion table. It is not an employment screen and not an IQ. Prática — não é um QI clínico.
What is criterion validity? →What is content validity?
Content validity is whether the item set covers the skill or knowledge you claimed. A spelling test with only the letter Q is a coverage failure. Shape-span lite samples a tiny visuospatial sequence. It does not cover “all spatial intelligence.” Experts, blueprints and reviews build content arguments. A weekend hackathon does not. Prática — não é um QI clínico.
What is content validity? →What is a confidence interval?
A 95% confidence interval is a procedure: if you repeated the study under the same model, 95% of such intervals would cover the parameter. It is not the probability that this one interval magically contains the truth after you saw it. Licensed IQ manuals turn a standard error into a range around a scaled score. Digit-span lite does not. Treat any integer from this site as a toy count. Prática — não é um QI clínico.
What is a confidence interval? →What is item response theory?
Item response theory (IRT) models each item: harder items need more of the trait for a 50% chance of success; discriminating items separate nearby people. Computerized adaptive tests pick the next item from that model. Pattern-matrices lite is a fixed original set. It does not estimate a theta with published item parameters. It is not an IQ. Prática — não é um QI clínico.
What is item response theory? →