Subjects were told whether they would receive the liquid meal or whether they would continue fasting before completing questionnaires.
Several studies indicate that simple cash incentives, like payments to employees for completing questionnaires assessing their health, discounts at health clubs, reduced health insurance premiums, can all help.
There is evidence from laboratory studies that anxiety scores are elevated by completing questionnaires about health problems for the first time.
The experiments began before the crew had even arrived at the space station, with all three completing questionnaires to help mission scientists understand why three-quarters of astronauts suffer "space headaches" almost as soon as they arrive in orbit.
She had prepared the speech beforehand and wanted to give them both a concrete goal to aspire to, the dream of one day completing questionnaires for themselves and for others.
The site, which is now defunct, offered to pay Internet access fees to consumers willing to join its "network" -- at a one-time cost of $10 to $16 -- by completing questionnaires and monthly marketing surveys.
After completing questionnaires about their childhoods, more than seventeen thousand Kaiser Permanente patients were assigned an "ace score," from zero to ten, a tally of the kinds of adversity experienced before the age of eighteen.
Participants first applied online, completing questionnaires about severity of symptoms, demographic details, and chronicity of symptoms (see Table 1).
Gestational age for completing questionnaires and interviews is given as mean (standard deviation (SD)) and differences tested by unpaired T-tests.
Participants did not like completing questionnaires.
Participants received $10 RMB in return for completing questionnaires.
