- A reliability-based estimate of how much observed scores would scatter around a true score.
- They communicate that 112 and 118 might be the same true score.
- Milliseconds are precise as timestamps, not as human traits.
- Even two gold-standard batteries disagree somewhat.
- Averaging unnormed toys does not create a Wechsler.
- Letter-span-lite and reaction-time are session toys.
What is SEM?
A reliability-based estimate of how much observed scores would scatter around a true score. High reliability, smaller SEM. No reliability coefficient, no honest SEM.
Why confidence bands?
They communicate that 112 and 118 might be the same true score. Cut scores for programs ignore bands at their peril.
Do reaction-time games look more precise than they are?
Milliseconds are precise as timestamps, not as human traits. Device lag dwarfs many “IQ-like” differences people read into a session.
What about two different tests?
Even two gold-standard batteries disagree somewhat. A flanker-lite versus a matrices-lite disagreement is expected noise, not a dual personality.
Can I average many web games to cancel error?
Averaging unnormed toys does not create a Wechsler. You mostly average device and practice effects.
How should I read scores here?
Letter-span-lite and reaction-time are session toys. If you need an interval around a score, that is a manual for a real test, not this page.
❓ People also ask
What Is Attention Control?
Attention control is the skill of holding a current goal and filtering noise — a side conversation, a flashing tab, or a flanking arrow on a screen. It overlaps working memory and inhibition, yet it is not a synonym for IQ, and a browser hit count is not a diagnosis. Labs time tightly controlled trials; this site offers lite practice only, with no clinical battery behind the score.
What Is Attention Control? →IQ and Income
Surveys often find a positive correlation between cognitive-test scores and later earnings, but the path is noisy: education, health, networks, discrimination, and luck all sit in between. A correlation is not a paycheck forecast, and a higher score on a web game here is not a raise, a credential, or a clinical IQ. Group charts never tell you one person’s worth or hiring outcome.
IQ and Income →Visuospatial vs Verbal
Cognitive batteries often split visuospatial puzzles from verbal ones so you can see different strengths, not a single destiny. A high spatial sketch and a high vocabulary can diverge; neither pattern is a diagnosis. Online letter-span or hidden-figures lite games sample a slice of those families — they are not Wechsler indexes, not clinical IQ composites, and not career oracles.
Visuospatial vs Verbal →What Is Cognitive Flexibility?
Cognitive flexibility is the ability to update a rule when the world changes — switching from color to shape, or from one task set to another, without staying stuck. It is one executive-function toy, not a full intelligence profile. Task-switch lite on this site is original practice with no age norms, no standard error, and no clinical IQ attached to the hit count.
What Is Cognitive Flexibility? →Test Norming Basics
Norming is how a published test turns a raw hit count into a number you can compare with a reference group of the same age. Without a documented sample, a standard deviation, and a date, a web score is just a count. This site’s games are not normed batteries and must not be read as a clinical IQ, a school placement, or a medical finding.
Test Norming Basics →