Assessing Metacognition: Theory and Practices

KUŞLU, Duygu; ÖZTÜRK, Emel; Ozturk, Nesrin

Assessing Metacognition: Theory and Practices

Duygu KUŞLU, (Antalya Training and Research Hospital, Clinic of Nuclear Medicine, Antalya, Turkey)

Nesrin ÖZTÜRK, (Ege University, Izmir, Turkey)

Emel ÖZTÜRK (Memorial Hospital, Clinic of Nuclear Medicine, Ankara, Turkey)

International Journal of Assessment Tools in Education

3 0

Yıl: 2017 Cilt: 26 Sayı: 3 Sayfa Aralığı: 134 - 148 Metin Dili: İngilizce İndeks Tarihi: 29-07-2022

Assessing Metacognition: Theory and Practices

Öz:

Many researchers in education emphasized students’ metacognition should be fostered for academic development and achievement. However, to support students’ metacognitive development and adequacy appropriately, their metacognition is to be assessed first. For this purpose, this theoretical study conducted a short review of metacognition, its assessment, and limitations of assessment measures and procedures. By focusing on ten current studies, a pattern of metacognition assessment was portrayed. It was concluded that knowledge about and regulation of cognition was assessed simultaneously as metacognition theory proposes. To assess especially knowledge about cognition, exclusively off-line measures were used. For regulation of cognition, both off-line and on-line measures were used. Chronological analysis of these studies revealed that latest metacognition assessment studies tended to utilize domain-specific or real-life tasks. Based on the findings, research implications for assessment and instruction were laid down

Anahtar Kelime:

Konular: Eğitim, Eğitim Araştırmaları

A Comparison of Iterative Reconstruction and Prone Imaging in Reducing the Inferior Wall Attenuation in Tc-99m Sestamibi Myocardial Perfusion SPECT

Öz:

Objective: Prone positioning, iterative reconstruction (IR-OSEM) and electrocardiography (ECG) gating have been demonstrated to improve the specificity of myocardial perfusion SPECT (MPS) in the diagnosis of coronary artery disease. Methods: The gated supine and prone MPS images of 45 patients were reconstructed with both IR-OSEM [supine (SIR) and prone (PIR)] FBPs [supine (SFBP), prone (PFBP)] for comparison. Perfusion, wall motion (WM) and wall thickening were also interpreted semi-quantitatively. Two groups were generated as those with normal or abnormal findings. Segmental myocardial tracer uptake values were noted from four of the reconstructed images from 17 segment model of bullseye. Results: The difference between mean values and the standard deviations of the % tracer uptakes of inferior wall segments were statistically significant in all images. The normalcy rates were highest in PIR images, followed by PFBP and SIR images. The number of patients with any perfusion abnormality were 42, 12, 32, and 6, in SFBP, PFBP, SIR and PIR images, respectively. The six patients with perfusion abnormality in PIR images were re-evaluated with rest images and were diagnosed with a fixed perfusion defect. There was positive correlation between WM and either PFBP or PIR images. Sixteen patients’ WM were evaluated as abnormal while only 6 patients’ perfusions were abnormal in PIR. Conclusion: Prone imaging in addition to a supine perfusion SPECT improves imaging quality of the inferior wall, especially when reconstructed with iterative methods. If prone imaging can not be performed, ECG-gating can also be used as a beneficial method

Anahtar Kelime:

Konular: Eğitim, Eğitim Araştırmaları

Tc-99m Sestamibi Miyokard Perfüzyon SPECT Görüntülemede İnferior Duvar Attenüasyonunu Azaltmada İteratif Rekonstrüksiyon ile Pron Pozisyonun Karşılaştırması

Öz:

Amaç: Koroner arter hastalığı tanısında miyokard perfüzyon SPECT (MPS) görüntüleme spesifitesini artırmak için pron pozisyonlama, iteratif rekonstrüksiyon (IR-OSEM) ve elektrokardiyogram (EKG) tetikleme gibi yöntemler geliştirilmiştir. Yöntem: Bu yöntemleri birbirleriyle karşılaştırmak amacıyla, kombine gated supin ve pron Tc-99m MIBI MPS görüntülemesi yapılan 45 hastanın görüntüleri retrospektif olarak yeniden değerlendirildi. Her iki görüntüleme de IROSEM ile rekonstrükte edilerek [supin (SIR), prone (PIR)], rutin filtered-back projeksiyon (FBP) ile rekonstrükte edilmiş görüntülerle [supin (SFBP), prone (PFBP)] karşılaştırıldı. Perfüzyon, duvar hareketi (WM) ve kalınlaşması görsel olarak Öz değerlendirilerek normal veya anormal olarak gruplandırıldı. Miyokardiyal segmental aktivite tutulum oranları 17 segment modeline göre değerlendirildi. Bulgular: İnferior duvar % aktivite tutulum oranlarında dört yöntemde anlamlı farklılık bulundu. Normallik oranı en yüksek PIR görüntülerde ve takiben sırasıyla PFBP ile SIR görüntülerdeydi. Perfüzyonu anormal hasta sayısı SFBP, PFBP, SIR ve PIR görüntülerde sırasıyla 42, 12, 32 ve 6 olarak değerlendirildi. Bu altı hasta istirahat görüntüleriyle birlikte tekrar değerlendirildiğinde sabit perfüzyon defekti tespit edildi. WM ile PFBP perfüzyon ve PIR perfüzyonu arasında korelasyon tespit edildi. WM anormal olan hasta sayısı 16 iken, PIR görüntülerde perfüzyonu anormal olan hasta sayısı 6 idi. Sonuç: Egzersiz sonrası MPS'ye eklenen pron görüntüleme, özellikle IR-OSEM ile rekonstrükte edildiğinde, inferior duvarda atenüasyonu belirgin azaltmaktadır. Pron görüntüleme uygulanamadığında EKG-tetikleme de yardımcı bir yöntemdir

Anahtar Kelime:

Konular: Eğitim, Eğitim Araştırmaları

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Ozturk N, KUŞLU D, ÖZTÜRK E (2017). Assessing Metacognition: Theory and Practices. , 134 - 148.
Chicago	Ozturk Nesrin,KUŞLU Duygu,ÖZTÜRK Emel Assessing Metacognition: Theory and Practices. (2017): 134 - 148.
MLA	Ozturk Nesrin,KUŞLU Duygu,ÖZTÜRK Emel Assessing Metacognition: Theory and Practices. , 2017, ss.134 - 148.
AMA	Ozturk N,KUŞLU D,ÖZTÜRK E Assessing Metacognition: Theory and Practices. . 2017; 134 - 148.
Vancouver	Ozturk N,KUŞLU D,ÖZTÜRK E Assessing Metacognition: Theory and Practices. . 2017; 134 - 148.
IEEE	Ozturk N,KUŞLU D,ÖZTÜRK E "Assessing Metacognition: Theory and Practices." , ss.134 - 148, 2017.
ISNAD	Ozturk, Nesrin vd. "Assessing Metacognition: Theory and Practices". (2017), 134-148.

APA	Ozturk N, KUŞLU D, ÖZTÜRK E (2017). Assessing Metacognition: Theory and Practices. International Journal of Assessment Tools in Education, 26(3), 134 - 148.
Chicago	Ozturk Nesrin,KUŞLU Duygu,ÖZTÜRK Emel Assessing Metacognition: Theory and Practices. International Journal of Assessment Tools in Education 26, no.3 (2017): 134 - 148.
MLA	Ozturk Nesrin,KUŞLU Duygu,ÖZTÜRK Emel Assessing Metacognition: Theory and Practices. International Journal of Assessment Tools in Education, vol.26, no.3, 2017, ss.134 - 148.
AMA	Ozturk N,KUŞLU D,ÖZTÜRK E Assessing Metacognition: Theory and Practices. International Journal of Assessment Tools in Education. 2017; 26(3): 134 - 148.
Vancouver	Ozturk N,KUŞLU D,ÖZTÜRK E Assessing Metacognition: Theory and Practices. International Journal of Assessment Tools in Education. 2017; 26(3): 134 - 148.
IEEE	Ozturk N,KUŞLU D,ÖZTÜRK E "Assessing Metacognition: Theory and Practices." International Journal of Assessment Tools in Education, 26, ss.134 - 148, 2017.
ISNAD	Ozturk, Nesrin vd. "Assessing Metacognition: Theory and Practices". International Journal of Assessment Tools in Education 26/3 (2017), 134-148.