Psychometric validation of Barkley's Adult Sluggish Cognitive Tempo (SCT) Ratings Scale -Turkish version and distinguishing SCT from attention deficit-hyperactivity disorder (ADHD) among Turkish adults.
The Turkish Barkley Adult SCT scale cleanly separates sluggish cognitive tempo from ADHD in young adults, giving clinicians a ready screen.
01Research in Context
What this study did
Researchers translated Barkley's Adult Sluggish Cognitive Tempo scale into Turkish. They gave the two-page survey to university students with no known disabilities.
The team checked if the Turkish words held the same two-factor structure as the English original. They also ran stats to see if SCT scores stayed separate from ADHD scores.
What they found
The Turkish scale held together well. Items clumped into the same two groups: day-dreamy sluggishness and slow processing speed.
SCT scores rose and fell on their own track. They did not lump in with ADHD scores, so clinicians can spot sluggish cognitive tempo without mixing it up with attention deficit.
How this fits with other research
Pitchford et al. (2019) also poked at measurement quality. They warned that Tau-U scores can balloon when reading-fluency data hit ceiling levels. Both papers push the same lesson: check your tool before you trust the number.
Yang (2022) and O'Handley et al. (2021) trained teachers and school psychologists to run MSWO preference assessments. Their work and the SCT study share the assessment shelf, but they test skill training while Ahmet et al. test a self-report scale. Together they show that good measurement needs both solid items and well-trained people.
Why it matters
If you serve Turkish-speaking adults, you now have a free, quick screen for sluggish cognitive tempo. Hand it out during intake, look at the two factor scores, and plan slow-paced interventions without worrying you just measured ADHD again. The scale keeps the constructs clean, so your treatment targets stay clear.
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02At a glance
03Original abstract
BACKGROUND & AIMS: SCT is characterized by sluggishness, daydreaming, lethargy/ apathy, slowed behavior/thinking, and mental confusion. For a long time these symptoms were thought to be a part of ADHD but then studies revealed that SCT is a different phenomenon in some cultures. In this study. we aimed to examine the validity and reliability of Barkley's Adult SCT Ratings Scale, and to determine if SCT is an independent factor from ADHD in Turkish adults like in other cultures. METHODS: 274 Medical School students/trainees enrolled the study (Age: 18-35, 70.4 % female). Data was collected via an online survey including SCT and ADHD rating scales. RESULTS: Exploratory factor analysis demonstrated that the scale consisted of two factors: Daydreaming and Sluggishness.The model demonstrated a good-fit (χ2 = 43.642, p = 0.001; χ2/df = 2.425, GFI = 0.962,RMSEA = 0.072). As expected, there were positive and significant associations between SCT total, Daydreaming, Sluggishness, and ADHD-Inattention scores (r = 0.645, 0.664, 0.382; respectively), but all SCT items loaded within SCT factors and distinquished from ADHD factors. Cronbach's alpha values were: 0.87 for SCT-total, 0.87 for Daydreaming; 0.79 for Sluggishness. CONCLUSION & IMPLICATIONS: Our study provides a valid and reliable SCT screening tool for Turkish adults and increases our confidence in the transcultural generalizability of SCT.
Research in developmental disabilities, 2022 · doi:10.1016/j.ridd.2021.104155