Jessica Casey — Biografia de Criança Prodígio

Biografia

What happened

ITV News Wales published the story on 18 May 2021 under a headline of the kind these results always attract: the 13-year-old Aberdare girl with a higher IQ than Albert Einstein and Stephen Hawking. Rhondda Cynon Taf Council followed on 4 June with a press release through Aberdare Community School, and Newsweek carried a first-person piece the same year.

The comparison in the headline needs handling with care. Neither Einstein nor Hawking is known to have sat a modern IQ test; the figures attached to them in popular culture are estimates, not measurements. What the record shows is narrower and verifiable: on the Cattell III B paper, 162 is the highest score available, and Jessica reached it.

What the Cattell III B measures

British Mensa uses the Cattell III B as one of its supervised tests, and the coverage of Jessica's result makes the crucial point in passing: 162 is the maximum a child can score on it. That is why the figure appears so often in British stories about young Mensa members.

This matters for interpreting the result. British coverage of young Mensa members converges again and again on the same figure, 162, because it is the ceiling of the paper rather than a coincidence. A score at the ceiling means the test could not separate the candidate from anyone else who also reached the top, and a different instrument would produce a different number. It is a qualifying threshold, not a measurement of the limit of a child's ability.

Two in one family

The research record notes that her brother Harrison, then 15, had achieved the same score and was already a member of Mensa, and names their parents as Amy and Lee Casey. The family also said she had been reading at the age of one.

Siblings at the ceiling of the same paper is the detail that made the story travel beyond Wales. It is also the point at which the coverage typically outruns the evidence: the sources gathered here record the results and the reading, and say nothing about how either child was taught.

What Mensa membership does and does not mean

Mensa admits people who score at or above the 98th percentile on a supervised test. Membership confers access to the society and its activities; it is not an academic qualification, a scholarship or a prediction.

That distinction rarely survives the headlines, which is why these stories tend to be written in comparison with famous physicists rather than in percentiles. For the children involved, the practical consequence is a membership card, a local newspaper article and, occasionally, a national one.

O TESTE GRATUITO

Qual é o seu?

Vinte perguntas, oito minutos no relógio e um percentil medido contra todos os que já fizeram. Sem cadastro.

Fazer o teste de QI →

What is documented, and what is not

Firmly established: the score of 162 on the Cattell III B in 2021 at 13, the coverage by ITV News Wales and Newsweek, the school press release, and her brother's identical score.

Not established here: her date of birth, her subjects, her later examination results, or anything since 2021. She was a child when the story ran, and this page carries nothing about her school timetable or her family beyond what the press published.

Linha do Tempo de Conquistas

Jessica Casey — every milestone on this page, in order.

2021

ITV News Wales reporta a sua pontuação de 162A ITV News Wales reporta a sua pontuação de 162 em 18 de maio

2021

O Conselho de Rhondda Cynon Taf emite um comunicadoO Conselho de Rhondda Cynon Taf emite um comunicado de imprensa através da Aberdare Community School em 4 de junho

2021

A Newsweek publica um artigo em primeira pessoaA Newsweek publica um artigo em primeira pessoa sobre o resultado

Comparação Histórica

Pessoa	País	Marco	Idade / Dado
Lawson Lundberg	Estados Unidos	Adesão à Mensa aos 3 anos	3 anos
Nishi Uggalle	Reino Unido	Vitória no Child Genius do Channel 4 em 2019	10 anos
Jessica Casey	Reino Unido	Pontuação máxima de 162 no teste Cattell III B da Mensa	13 anos
David Camacho	México	Seleção para um programa júnior da NASA, 2024	—
Sharvin Jeyendran	Austrália	Um teste da Mensa colocou-o em 168, e as manchetes colocaram-no acima de Stephen Hawking	—

What is documented — and what is not

✓ Documented

She scored 162 on Mensa's Cattell III B test in 2021 at 13 (ITV News Wales)
Rhondda Cynon Taf Council publicised the result through Aberdare Community School in June 2021
Newsweek published a first-person piece on the result the same year
162 is the maximum score available to a child on that paper

? Unverified, disputed or wrong

No source read states her date of birth
The details about her brother, her parents and her early reading come from the research record rather than pages read in full
Nothing documents her studies or life after 2021

Questions people ask about Jessica Casey

What is Jessica Casey's IQ?

She scored 162 on Mensa's Cattell III B test in 2021, the maximum the paper produces for a child. It is a test result reported by ITV News Wales, not a fixed measurement.

How old was she?

Thirteen. No source read here gives her date of birth.

Is that higher than Einstein's IQ?

Neither Einstein nor Hawking is known to have taken a modern IQ test. The figures attached to them in popular culture are estimates rather than measurements.