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Powers-Sumner-Kearl Readability

A fórmula Powers-Sumner-Kearl estima o nível de série dos EUA necessário para ler texto de série elementar. Combina-se naturalmente com Spache e Dale-Chall.

Não foi feita para Português (BR)

Esta ferramenta foi calibrada para o inglês (e alguns idiomas relacionados). Resultados em Português (BR) podem não fazer sentido.

Quando usar

Use Powers-Sumner-Kearl for elementary text. It pairs naturally with Spache for K-4 readers and Dale-Chall for grades 4-8. Originally a simplified variant of Flesch designed for primary education.

Como se compara

PSK is one of three primary-grade formulas (with Spache and Dale-Chall). The three together provide consensus for elementary text. PSK is the simplest and fastest of the three.

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Como funciona

Powers-Sumner-Kearl is a simplified Flesch variant from 1958: 0.0778 × avg sentence length + 0.0455 × syllables-per-100-words − 2.2029.

It outputs a grade level calibrated for primary education (grades 1-6).

Use alongside Spache and Dale-Chall for a primary-grade consensus.

Fórmula

Perguntas frequentes

How does PSK differ from Flesch-Kincaid?

Same inputs (sentence length + syllables) with different coefficients. PSK is calibrated for primary grades; FK extends through college.

Why use PSK over PK?

For elementary text (grades 1-6), PSK is better calibrated. For older audiences, use Flesch-Kincaid.

Is PSK still used?

In academic reading research, yes. In commercial writing, Flesch-Kincaid dominates. PSK shines as a third opinion for primary text.

Exemplo prático

Entrada

A 50-word elementary text with short sentences and one-syllable words.

Saída

PSK grade 2.8 — primary.

Short sentences (avg 8 words) and low syllables-per-100 (110) place this firmly in early elementary range.

Erros comuns

  • Calibrated for grades 1-6; results above grade 6 are unreliable.
  • Doesn't check vocabulary familiarity — use Spache for that.
  • Short samples (< 100 words) are noisy.
  • Modern children's vocabulary may differ from the formula's 1958 calibration.

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