On the completion of this thesis,
I would like to thank

Dr. William J.F.Lew who gave me full instruction in the course of the whole study.

Professor C.Y.To who gave me recommendations to the schools, which enabled the study to be carried out.

Dr. Sing Lau who gave me suggestions and encouragement.
Dr. Lee Yan C.C.

Dr. Benjamin Chan who served as the judges in the Panel for grading the prestige of the schools, which enabled me to decide the schools to be invited for this study.
Dr. S.C. Cheng
Mr. Y.W.Fung

Mr. C.M.Chung who helped me to improve the computer programmes and to interpret the computer printouts.

Also, the school principals of the following schools were cordially thanked for granting me permissions for the conduction of the tests in their schools. Teachers and students were thanked for their greatest patience and cooperation in the participation of this study.

(There is no meaning in the ordering of the following schools.)
(1)The Pentecostal Holiness Church Wing Kwong College
(2)The Methodist College (Yau Ma Tei)
(3)The Pui Ching Middle School
(4)The All Saints' Middle School

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