that the responses of the person being interviewed would be kept confidential 

 and not revealed as the response of a single household. Each interviewer 

 carried sufficient identification to indicate that he was an employee of W. R. 

 Simmons and Associates Research, Inc. under contract to the United States 

 Fish and Wildlife Service. 



Where necessary, each household in the sample was visited a second time 

 to establish contact with a responsible member of the household in order to 

 complete the questionnaire. Those households not-at-home after two calls were 

 accounted for in the sample by a method of weighting based on the not-at- 

 home experience of those responding. 



Since the household member interviewed was asked to recall something 

 about canned fish and shellfish served in the preceding twelve months and in 

 some instances about the last four weeks, memory aids were used. A card was 

 used which listed the various forms and species of canned fish and shellfish, 

 while other cards were used to classify the respondent's age and household 

 income. 



The data obtained were checked and tabulated by trained employees of 

 the contracting firm. Checks were made for completeness of answers, correct 

 recording of answers in the proper places, and adherence to the proper sampling 

 procedure. Checks were also used throughout all phases of tabulating including 

 the accuracy of punched cards, the machine tabulations and the final report. 



WHAT THE SURVEY MEASURED 



The survey was designed to measure various household preferences for 

 canned fish and shellfish. It was desired to learn something about the general 

 reaction of household consumers to certain styles of pack, purchase habits, 

 etc. It was also desired to ascertain the factors influencing the use or non- 

 use of the various types of canned fish and canned shellfish. Some of the kinds 

 of information which was gathered from housewives and other adult members 



