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Auditory & Visual Attention: New Developments in Assessment Using CPTs. C. K. Conners, Ph.D. Conners’ CPT II. Continuous Performance Test II. Conners’ CPT II. Development & Standardization. Normative Data. Nonclinical N = 1920 N = 812 Epidemiological Study N = 1108 Multi-Site Study

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conners cpt ii

Conners’ CPT II

Continuous Performance Test II

conners cpt ii3

Conners’ CPT II

Development & Standardization

normative data
Normative Data
  • Nonclinical N = 1920
    • N = 812 Epidemiological Study
    • N = 1108 Multi-Site Study
  • ADHD N = 378
  • Neurological N = 223 (Adults)
ethnic composition of the cpt ii nonclinical sample
Ethnic Composition of the CPT II Nonclinical Sample

*Note: The epidemiological sample classified individuals as “African American” or “Other,” producing a large percentage of “Other” classifications.

conners cpt ii8

Conners’ CPT II

Developmental Trends

(Nonclinical Norm Data)

cpt ii

CPT II

Discrimination of Clinical and Nonclinical Groups

ancova results summary
ANCOVA Results Summary
  • ADHD, Neuro., and Nonclinical groups compared across measures controlling for Age and Gender
  • The clinical groups (ADHD & Neuro.) scored significantly higher (p < .001) than nonclinical on ALL measures
ancova results summary continued
ANCOVA Results Summary (continued)
  • Also, relative to the ADHD group, the Neuro. Group
    • made more omission errors (p < .001)
    • had slower RTs (p < .001)
    • had more variable responses (p < .001)
    • responded less consistently by ISI (p < .001)
discriminant functions
Discriminant Functions
  • Used to identify best predictors for differentiating between groups
  • Different Functions used for child/adult, ADHD/Neuro assessment
  • Used to determine classification accuracy rates
cpt ii confidence indexes
CPT II Confidence Indexes
  • Based on Discriminant Function Analysis
  • Provides a Classification Prediction
    • Index > 50 (Prediction: Clinical)
    • Index < 50 (Prediction: Nonclinical)
  • Exact value of index indicates the “probability” associated with the prediction
  • Incorrect to use index as the sole criterion for CPT II assessment
reduce false positives option
Reduce False Positives (Option)
  • Adjusts for Base Rates
  • Increases certainty of need for follow-up (i.e., helps avoid “false alarms”)
minimize false negatives option
Minimize False Negatives (Option)
  • In clinical settings, may be used to adjust for Base Rates
  • Useful Option when focus is on corroboration of Dx
conners cpt ii30

Conners’ CPT II

Features of the Software

multi admin interpretation text
Multi-Admin Interpretation Text

Progressive Analysis

Second Administration (Aug 09, 2000) vs. Third Administration (Aug 16,2000)

There was a substantial change in the Confidence Index between these two administrations. The decrease in the Confidence Index was sufficient to produce a nonclinical classification on the third administration while the second administration suggested a clinical classification. The change was statistically significant based on the Jacobson-Truax assessment procedure.

First Administration (Aug 02, 2000) vs. Second Administration (Aug 09, 2000)

There was a substantial change in the Confidence Index between these two administrations. The change was statistically significant based on the Jacobson-Truax assessment procedure. In both administrations, but especially in the first, the Confidence Index favored a clinical classification.

Current Performance vs. First Administration

First Administration (Aug 02, 2000) vs. Third Administration (Aug 16, 2000)

There was a substantial change in the Confidence Index between these two administrations. The decrease in the Confidence Index was sufficient to produce a nonclinical classification on the third administration while the first administration suggested a clinical classification. The change was statistically significant based on the Jacobson-Truax assessment procedure.

c data
C-DATA
  • Why do we need an auditory CPT?
  • What is the goal of this project?
c data38
C-DATA
  • Development of Auditory Attention
  • LD, ADHD, CAPD
c data39
C-DATA
  • Paradigm
    • Likely need to diverge from visual CPT type paradigms
c data40
C-DATA
  • Paradigm Criteria
    • Applicable to wide age range
    • Measure ability to direct attention to one channel or the other
    • Competing sounds included
    • Include consonant-vowel (CV) elements
    • Verbal and non-Verbal
c data41
C-DATA
  • Paradigm Criteria (Continued)
    • Measure lateral preference
    • Mobility of Attention measured
    • Signal Detection Theory/Response bias
    • Stimulus onset asynchrony varied
    • Inter-Stimulus Interval varied
    • Vigilance measured
c data42
C-DATA
  • Paradigms
    • Tone condition
    • Dichotic Condition
c data43
C-DATA
  • Statistics
    • Hits to targets
    • False alarms to warnings
    • Omissions to targets
    • Delayed responses
    • Mobility
    • REA
    • Laterality