edSpring

Letter Naming Fluency

Rating Summary

Classification Accuracyempty bubble
GeneralizabilityModerate Low
Reliabilityempty bubble
Validityempty bubble
Disaggregated Reliability and Validity DataN A
Efficiency
AdministrationIndividual
Administration & Scoring Time1-2 Minutes
Scoring KeyComputer Scored
Benchmarks / NormsYes

 

 

Classification Accuracy

Classification Accuracy in Predicting Proficiency on Letter Sound Fluency assessment

 

Kindergarten

False Positive Rate

0.12

False Negative Rate

0.48

Sensitivity

0.79

Specificity

0.68

Positive Predictive Power

0.88

Negative Predictive Power

0.52

Overall Classification Rate

0.76

AUC (ROC)

0.79

Base Rate

0.75

Cut Points:

Letter Naming Fluency Fall K = 28 (green only)

At 90% Sensitivity, Specificity equals

0.46

At 80% Sensitivity, Specificity equals

0.63

At 70% Sensitivity, Specificity equals

0.73

 

Generalizability

Description of study sample:

  • Number of States: 1
  • Gender
    • 52% Male
    • 48% Female
  • SES: 27% eligible for free or reduced-price lunch
  • Race/Ethnicity:
    • 62.0% White, Non-Hispanic
    • 3.1% American Indian/Alaska Native
    • 24.5% Black, Non-Hispanic
    • 27.6% Asian, Pacific Islander
    • 8.6% Hispanic
  • Disability status: 6.7% identified special education

Reliability

Type of Reliability

Age or Grade

n (range)

Coefficient Range

Coefficient Median

SEM

Information (including normative data)/Subjects

Test-retest

K

509

0.71

 

 

LNF Winter Grade K with LNF Spring Grade K

Test-retest

K

164

0.69

 

 

LNF Fall Grade K with LNF Winter Grade K

 

Validity

Type of Validity

Age or Grade

Test or Criterion

n (range)

Coefficient Range

Coefficient Median

Information (including normative data)/Subjects

Predictive

K

Nonsense Word Fluency

469

0.65

 

LNF Winter Grade K with NWF Spring Grade K

Concurrent

K

Letter Sound Fluency

215

0.78

 

LNF with LSF Fall Grade K

Concurrent

K

Letter Sound Fluency

713

0.76

 

LNF with LSF Winter Grade K

Concurrent

K

Letter Sound Fluency

595

0.68

 

LNF with LSF Spring Grade K