Head Copy Lab Help

Buffered Copy (Hard Gating)

Buffered Copy enforces delayed typing by locking each word slot until the CW stream has moved ahead by your target lag.

• Choose a buffer target of 1, 2, or 3 words.
• Slot i unlocks only after playback completes word i + target.
• Each submitted word records observed lag and compliance event data.
• Session lag metrics: average lag, minimum lag, compliance percentage.

Chunking Drills

Chunking mode splits each sentence/story into fixed-size word groups.

1. Play one chunk.
2. Open response window and type from memory.
3. Submit, review expected vs received text, then move to next chunk.

Use chunk size 2-3 for speed building, 4-5 for working memory stress drills.

Settings and Audio Controls

• Content source: Sentences (language + length) or Stories (set-based).
• Audio controls: character speed, effective speed, pitch, volume, and noise profile.
• Punctuation strictness toggle affects normalization and scoring.
• Replay and pause are tracked as assisted actions in analytics.

Scoring and Error Types

Head Copy Lab applies normalization (trim, collapsed spaces, uppercase) and computes both word-level and character-level results.

• Word accuracy: edit-distance based score against expected words.
• Character errors: Levenshtein alignment with taxonomy classification:
• substitution, omission, insertion, transposition

Character errors are batched and saved with context text, position, and session correlation fields.

Analytics and Guest Mode

• Signed-in users: completed sessions and character errors are saved automatically.
• Guest users: training works fully, but analytics are not persisted.
• Dashboard filters: mode, content source, language, timeframe.
• Clear Statistics requires explicit confirmation phrase.