- Adaptive dual n-back (remember both visuospatial and auditory streams) appeared to raise Gf scores more than a control activity in a small sample.
- Replication problems, active-control debates, and meta-analyses showing near transfer (n-back gets easier) with weak or null far transfer to Gf, school tests, or other WM tasks depending on inclusion rules.
- If you enjoy the challenge, yes — as a game.
- You may learn n-back-specific strategies (rehearsal timing, when to guess) that do not help matrix rules or vocabulary.
- Believing training works can raise effort on the post-test.
- N-back (single stream) and dual-n-back-lite.
What was the original claim?
Adaptive dual n-back (remember both visuospatial and auditory streams) appeared to raise Gf scores more than a control activity in a small sample. Media heard “IQ training.”
What happened next?
Replication problems, active-control debates, and meta-analyses showing near transfer (n-back gets easier) with weak or null far transfer to Gf, school tests, or other WM tasks depending on inclusion rules.
Should I still play n-back?
If you enjoy the challenge, yes — as a game. Our n-back and dual-n-back-lite keep expectations small (N stays small on the lite dual version). We will not sell an IQ boost.
Why would transfer fail?
You may learn n-back-specific strategies (rehearsal timing, when to guess) that do not help matrix rules or vocabulary.
Placebo and motivation?
Believing training works can raise effort on the post-test. Good studies use convincing control tasks.
Where to play
N-back (single stream) and dual-n-back-lite. Pair with digit-span if you want another WM-style game.
❓ People also ask
What Is a Good IQ Score?
An IQ of 100 is exactly average; 110-119 is above average, 120 and up puts you in the top 10% (a genuinely 'good' score), and 130+ is considered gifted. IQ is built on a normal distribution with a mean of 100 and a standard deviation of 15, so most people cluster near the middle.
What Is a Good IQ Score? →IQ Percentile Chart: What Percentile Is My IQ?
Your IQ percentile tells you the share of people you scored higher than: an IQ of 100 is the 50th percentile, 115 is about the 84th, 120 is roughly the top 10%, and 130 is roughly the top 2%. The table below maps every major IQ band to its classification, percentile, and share of the population.
IQ Percentile Chart: What Percentile Is My IQ? →Are Online IQ Tests Accurate?
A well-designed online IQ test gives a reliable estimate of your reasoning ability, but it is not a clinical diagnosis — only a proctored test like the WAIS or Stanford-Binet provides that. This test is built on Raven's Progressive Matrices and CHC theory, scored on the standard scale (mean 100, SD 15), with an internal reliability (Cronbach's alpha) of about 0.85-0.92.
Are Online IQ Tests Accurate? →Can You Increase Your IQ?
You can meaningfully sharpen reasoning skills, working memory, and test performance through training and education, but raising your underlying general intelligence (g) substantially and permanently is not well supported — core g is largely heritable. The honest answer is that some gains are real and some popular claims are overstated.
Can You Increase Your IQ? →Genius IQ Level: What Number Counts as Genius?
A 'genius' IQ traditionally starts at 140, while 130 and above is labeled 'very superior' on modern tests. Scores that high are extremely rare, and the famous IQ numbers you see for historical figures are almost always estimates, not measured results.
Genius IQ Level: What Number Counts as Genius? →