Assessment Cutoffs and Mean and SD Flashcards
PAI Mean and SD?
What is the clinical cut off?
Mean T score of 50 (SD-10)
70 clinical cut off 2 SD above the mean 50 +10 +10
PAI Cutoffs
T-score 60 (84th percentile)
Experienced symptoms greater than the general population; Clinically significant
T-score of 70 (98th percentile)
2 SD above mean, Clinically significant
What is a T-Score?
A type of standardized score based on a score distribution that has a mean of 50 and a standard deviation of 10. For example, a raw score that is 1 standard deviation above its mean would be converted to a T score of 60.
Are the WAIS and WISC Standard scores the same?
What are they?
Both WAIS-IV and WISC-5 are reported in standard scores
o MEAN 100
o SD 15
§ People who score 2 SD below mean = ID (<70)
§ People who score 2 SD above mean = Gifted (>129)
What are the 4 validity scales for the PAI and what are the cut offs?
Validity Scales x4 o Positive Impression Management (PIM) – Cut off = 58 o Negative Impression Management (NIM) – Cut off = 73 o Infrequency (INF) – Cut off = 75 o Inconsistency (ICN) – Cut off = 73
What are the K10 cut off scores?
K10
- Max score = 50; Min score = 10 (Scale 1 – 5)
- Significant cut off score = 25 (half the max score)
- K10 does not differentiate between Dep, Anx & Stress, just shows distress
- Need further exploration – not diagnostic (screener)
SDQ - what are the 4 scales? And what is the highest score?
• 4 Problem Scales
o Emotion
o Conduct
o Hyperactivity
o Peers
•
Add all Problem scales for total difficulty score
o Highest Score = 40
•
To determine how much the child’s problems impacted aspects of their life – can
use supplementary Impact Score “extended version”
Strengths & Difficulties Questionnaire (SDQ)
What is the age group for the SDQ?
- Used for youth/child & Adolescents (4 – 17 years)
- Screening tool – need further Ax to diagnose
List of means and SD’s
WAIS - WISC - PAI - SDQ - K10 - DASS - 16pf
PAI - Mean T score of 50 (SD-10) (PIM) – Cut off = 58 (NIM) – Cut off = 73 (INF) – Cut off = 75 (ICN) – Cut off = 73
WISC o MEAN 100 o SD 15
WAIS o MEAN 100 o SD 15
SDQ - Highest score 40 ( 10 on each sub-scale 1. Emotion 2. Conduct 3. Hyperactivity 4. Peers)
K10 - Max score = 50; Min score = 10 (Scale 1 – 5) Significant cut off score = 25 (half the max score)
DASS -
K10 Highest Score?
50
Significant K10 score mild disorder
20 and above
K10 moderate or severe
above 25 moderate above 30 severe
SDQ - What is the highest score?
40
On the problem scales in the SDQ , emotion, hyperactivity, conduct and Peers what is the highest score for each scale?
10
10 x 4 =40
Prosocial scale opposite out of 10 but high score is good
On the SDQ what does it mean if someone is in the 97th Percentile for the hyperactivity scale?
That this child has more hyperactivity symptoms than 97% of his peers;
fewer than 97 of peers - you need to know what it means
50% for peer problem - they are average
80% for conduct problems - they have more conduct problems than 80% of their peers