List of illustrations vii
Contributors x
Acknowledgement xiv
Introduction xv

Part I Research reliability in validity

1 Understanding reliability in research / Vian Ahmed Ayokunle Olanipekun, Alex Opoku and Monte Sutrisna 3
2 Understanding validity in research / Ayokunle Olanipekun, Vian Ahmed, Alex Opoku and Monte Sutrisna 16

Part iii
Reliability test: Research case study examples 27

3 An investigation into contributing factors of excess inventory within the cosmetic industry in the UAE : an AHP analysis as form of inter-rater reliability / Vian Ahmed, Sara Saboor, Heba Khlaif and Dana Yazbak 29
4 An investigation into underpinning criteria of 'subjective happiness' in an academic environment : a parallel form of reliability test / Sara Saboor, Alia Al Sadawi, Malick Ndiaye and Vian Ahmed 42
Part iii Validity test : Research case study examples 53
5 Enhancing reliability and validity in a study exploring the indicators of a sustainability assessment framework for neighborhood development in Nigeria / Ayomikun Solomon Adewumi, Dumiso Moyo and Vincent Onyango 55
6 A predictive validity analysis of water demand forecasting model in the UAE / Vian Ahmed, Sara Saboor, Ahmad Saad, Hasan Saleh, Nikita Kasianov and Tahani Alnaqbi 70
7 Exploring and confirming project owners' motivations for green building project delivery using construct validity test / Ayokunle Olanipekun 83
8 Investigation into underpinning criteria of depression in women by adopting factor analysis as construct validity test / Sara Saboor, Sadawi Alzzatrah and Vian Ahmed 91

Part iv
Other research Reliability and validity 105
9 A case study of Singapore's Hawker Centres as an inclusive mechanism : internal and external validity of qualitative data / Yajian Zhang and Willie Tan 107
10 The Delphi technique as a tool for quality research in the built environment / Edoghogho Ogbeifun and Jan-Harm C. Pretorius 120

Index 137