The payoff curve is nearly flat from 120 to 135
The cognitive horsepower to finish a doctorate, master a quantitative field or run a complex team is fully present at 125. The next 10 points add something real but small, dwarfed by conscientiousness, drive and domain practice. Drag along the curve and watch how little the practical payoff moves.
How many people match or beat you in a…
Five points, and measurement error reaches across them
Mensa admits the top 2%, about 130. A 125 is 5 points short, but a good test has an error of ±3–5 points, so a true 125 sometimes posts 130+ on a given supervised sitting. Mensa accepts several approved instruments and you can try more than once.
Pick a true ability and see how often single sittings clear 130.
At or above the typical doctoral entrant
Estimates put the average IQ of doctoral-degree holders around 125–130, with wide spread. At 125 raw intelligence is rarely the bottleneck: persistence, advisor fit, funding and the years of grind are. The same holds across these fields: 125 is the entry ticket, not the ceiling.
Above this level, outcomes are driven far more by specialisation, network, communication and grit than by the score. Field averages summarise published estimates (Wai; SMPY), not this site's data.
Most 125s aren't evenly 125
A common pattern is a verbal or perceptual index in the 130s with processing speed nearer 115. The composite averages to 125, but your experience is shaped by the peak. Switch profiles.
Confirmation that reasoning isn't your constraint, nothing more
Every senior engineer is a patent holder. No patent holder works part-time. Priya is a senior engineer. Which must be true?
Percentiles, rarities and the sitting simulation are computed from a normal distribution (mean 100, SD 15). Doctoral and occupational averages summarise published estimates; the payoff curve is a toy model.