Ch. 4 Flashcards
Impairment
refer to loss or disorder of cognitive, emotional or physiological function
Activity/Functional Limitations
defined as resulting from impairments and refer to effects of impairments on a persons daily life functioning
Participation
defined as the nature and extent of a person’s involvement in life situations in relation to impairments, activity limitations, health conditions, and contextual factors.
Psychometric Properties: Validity
how accurate the test is
Psychometric Properties: Reliability
consistency of a test
Psychometric Properties: Generalizability
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Noncognitive factors influencing cognitive assessments: Variety of nonspecific factors
➢ Hunger
➢ Fatigue
➢ Headache
➢ Other sources of pain
Noncognitive factors influencing cognitive assessments: Some additional physical factors
➢ Visual field deficits
➢ Hemiparesis
➢ Poor visual acuity
➢ Hearing problems
Noncognitive factors influencing cognitive assessments: Emotional problems
➢ Anxiety
➢ Worry
➢ Boredom
➢ Preoccupation with other thoughts and concerns
Functional Approaches
o Functionally oriented psychometric measures these have been developed by testing people at home, or more natural settings. Also known as, ecologically valid measures.
o Structured observations and functional rating scales
o Direct observations can be extremely useful in functional setting.
o Rating scale can be particularly effective to examine differences in ability across different settings.
o Limitation they may not have adequate psychometric properties.
Assessment of Cognitive Abilities: Orientation and Arousal
o The Agitated Behavior Scale (Corringan, 1989; Corrigan & Bogner, 1994):
a. It’s useful for assessing individual’s recovering from severe injuries demonstrating slow emergence of cognition.
b. It’s helpful in monitoring time-related patterns of agitation and restlessness. .
c. It’s useful for documenting aggression when it’s a product of agitation and confusion.
d. It can give you a disinhibition score, aggression score, and lability score. Lability – appropriate laughter or crying. Disinhibition – do something completely inappropriate in social situations.
Assessment of Cognitive Abilities: General Cognitive/Intellectual Abilities
o The Wechsler Adult Intelligence Scale- III (WAIS III) is the most widely used measure of general intellectual ability.
➢ Represents a composite of performance on variety of (1) retrieval of general information, (2) vocabulary knowledge, (3) abstract reasoning, (4) both verbal and nonverbal problem solving or reasoning tasks, (5) memory recall, and (6) tests involving psychomotor speed.
➢ WAIS-III gives four factor scores (1) verbal compression score, (2) perceptual organization score, (3) working memory, and (4) processing speed
➢ Verbal vs. nonverbal subtests the verbal subtests tend to be less sensitive to acquired brain damage, which means you may not be able to diagnose rightly.
Assessment of Cognitive Abilities: Immediate Attention
Measures of forward and backward digit span are administered.
• Forward digit span (count 1-50, can look at two skills while doing this task) (1) immediate memory, and (2) sustained attention for a brief period
• Backward digit span (counting in reverse 50 to 1) (1) give you information about storage, and manipulation of numerical information, (2) divided attention, (3) working memory
• Nonverbal measures of spatial span are also sometimes used.
Assessment of Cognitive Abilities: Focused Attention
- Cancellation tasks very in complexity, but usually consist of rows of characters containing randomly interspersed targets to be canceled (i.e., crossed out) as quickly as possible.
- Trail Making Test (Part A and Part B) switching from numbers to letters. (Page 103)
Assessment of Cognitive Abilities: Sustained Attention
Measured by auditory or visual continuous-performance tests. e.g. Computer-based tasks such as the Conners Continuous Performance test; Digit Symbol Coding subtest of WAIS-III