Questionnaires/Surveys

Transcription

1 Questionnaires/Surveys International Atomic Energy Agency

2 Exercise Complete mini engagement survey Hand in to course leaders to compile results

3 Why surveys? To capture attitudes and impressions of a large population To make sure that everyone in a organization has had an opportunity to make his/her voice heard To establish a baseline and be able to track changes over time

4 Advantages of surveys Everyone has an opportunity to provide their view The survey itself is a message we care about your view! Data can be processed statistically to identify differences between groups (e.g. functional groups or hierarchical levels) Areas for further investigation, with other methods, can be identified Survey data gives a baseline for comparisons over time

5 Disadvantages of surveys It is resource-intensive to plan, distribute, analyse and communicate survey results Surveys identify symptoms rather than causes The information collected is about what employees think they think this is not the same as how they really act! Surveys are subject to response bias, e.g. respondents may feel that they should respond in certain ways Questionnaires say more about what the person asking questions thinks is important than what the respondent feels is important!

6 Integrity is important Integrity must be assured from two perspectives: Integrity in collecting and handling data Integrity in analysis and presentation of data

7 Distribution strategy Response rate is very important for statistical validity Communication strategy, how results will be taken care of = increased motivation to take part Management championing the survey Allocate work time for filling it out Rewards for filling in the questionnaire on time Reminders Response rate can be increased by monitoring the progress within different departments ( competition )

8 Distribution strategy (cont d) Group sessions to fill out questionnaire can be arranged Ensure that the integrity of the situation for filling out the questionnaire is maintained for all respondents and for the entire response period E.g. paper and electronic versions available and accessible; arrangements for shift workers

9 Measurement levels (1) 1. Nominal level Equivalence = or Many demographics, e.g. sex, religion, state/ province, etc. 2. Ordinal level Rank order or Preference, agreement, etc. 3. Interval level (scale has no fixed zero point) Ratios between differences have meaning Transformations permitted: y=a(x) + b (b 0) 4. Ratio level (scale has fixed zero point) Ratios (absolute) have meaning Transformations permitted: y=a(x)

10 Measurement levels (2) Limited or unlimited amount of scale values: discrete or continuous Nominal level: discrete Ordinal level: discrete or continuous Interval- and ratio level: continuous

11 Analysing survey data It is easy to treat numbers as absolutes but we should only see them as relative! Hence, comparisons over time are the most interesting ones. Do not settle for simple means and standard deviations. Use regression analysis, cluster analysis, factor analysis, etc. to understand the data This is a skill and requires interpretation and expertise! Ensure that no analysis on too small groups or other losses of anonymity can happen E.g. a department with only one manager makes him/her easy to identify

12 Pitfalls There are three types of lies: lies, damned lies and statistics.

13 Pitfalls Being deceived by precision Pre-determined levels of what is acceptable or not; redyellow-green indicators Failing to understand that this is a question of interpretation just as much as qualitative approaches are

14 Pitfalls 4. I think the communication of safety culture values is We know nothing about response rate. Is this 27 out of 3000? We know nothing about standard deviation. Are the differences statistically significant? What is a good level here?

15 Handling the results Communicate results by various media, e.g. intranet and face-to-face meetings highlights relevance to groups Be careful about how statistical results are communicated in order to prevent over-confidence If we consider all items with a response of 70 % or higher as strengths... what to make of the fact that 70 % of the employees find it important to follow rules and procedures? It also means that 30 % do not!...which may or may not be a problem depending on the circumstances.

16 Handling the results (cont d) Waking the sleeping giant using open fields where suggestions will be made. How to handle these? A low response rate can indicate a safety culture issue Survey results should not be communicated separately from the rest of the self-assessment findings Remember, the organization s responses to the communication of results is another good input for the safety culture self assessment!

17 Results of our mini-survey What did we learn about our views?

18 Summary Valid surveys are difficult to develop Surveys are a good way to gather perceptions from large populations Surveys cannot be used alone because they say as much about what the surveyor thinks as what the respondents think Surveys are most useful for watching trends in responses over time Surveys must be analyzed by people with expertise in statistics and social sciences