In my previous blog post, I noted that reliability and validity are two essential properties of psychological measurement. Measures of intelligence, personality, vocational interests, and so forth ...

There is a distinction that one learns about on the first day of a course in psychological research methods. It is the difference between internal and external validity. Internal validity is ...

Vodafone Idea has introduced two limited-time prepaid plans for Vi SIM users, focusing on affordability and long validity.

Although the contribution of dietary factors on the development of chronic diseases, particularly cancers and cardiovascular diseases, has been increasingly recognized, the measurement of usual ...

Correspondence to Dr Moritz Schumann, Institute of Cardiovascular Research and Sports Medicine, Department of Molecular and Cellular Sports Medicine, German Sport University Cologne, Koln 50858, ...

Doha, Qatar: Prepaid mobile users in Qatar have expressed their concerns over shorter validity duration of credit balance provided by telecommunication companies for their services. The credit ...

Vodafone Idea Limited (Vi), India's third-largest telco, has launched a prepaid plan with 180 days validity for 1,149 . The prepaid plan is for users that want more than minimal-validity prepaid plans ...