Can you recommend books for that explain methods to use in field labs. In this field

If I switched my method from assuming all assets are in use in the first day of the month nearest to the purchase date to all asset additions are considered to be in use on the first day of the following month, how would this affect the project margin of the business? I am now ready to pull my hair...

Could anyone please help me to find the following: drawing tests and those ones on determination of the meaning of life and death to conduct the research into psychology of gender in family man and woman, as well as self-appraisal measures (Budassi?), semantic differences method (Individual...