i would like to conduct an online questionnaire (survey monkey) which is long. It has about 100 statements. The participants are 15-17 years old. As expected, teenagers may not be interested in completing all the questionnaire in one session. probably, i will not get real results. To solve this, Can i do it in two different sessions (e.g. 50 statements in one day and the other half is in another day). could you ,the one who use surveymonkey, tell me how i can gurantee that the same student will complete it on the other day? will s/he be given password?
The most important thing is ( can a questionnaire be conducted in two different sessions???!!!) why/why not? please provide me with reference.