{"product_id":"9780199791040","title":"Validity and Validation (Understanding Statistics)","description":"\u003cp\u003eValidity and Validation is an introduction to validity theory and to the methods used to obtain evidence for the validity of research and assessment results. The book briefly describes the philosophy of science roots of validity theory and how these philosophical perspectives influence concepts of internal and external validity in research methodology.\u003c\/p\u003e","brand":"Oxford University Press Inc","offers":[{"title":"Default Title","offer_id":48664280858859,"sku":"00000_00000_00000_00000","price":100.71,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0758\/4484\/5803\/files\/9780199791040-1.jpg?v=1781612960","url":"https:\/\/kinokuniya.com.sg\/products\/9780199791040","provider":"Books Kinokuniya Singapore","version":"1.0","type":"link"}