Positional List-Order Choice Bias
When individuals are presented with a list of options sequentially, the placement of an item at the head of the list creates a systematic choice bias that attracts disproportionate attention and selection regardless of underlying match quality.
Picture this
Imagine a restaurant menu where 30% of diners order the very first item listed at the top, regardless of what dish it is. The top slot grabs mental focus first, giving that option a built-in advantage over identical items placed further down the page.
What the evidence says
Exactly 31.3% of control group applications and 31.1% of treatment group applications were directed to the first vacancy mentioned on the call or text message, despite first-listed vacancies comprising only 22% of all available matches.
- Who
- N = 1,116,952 jobseeker-vacancy matches across 9,838 jobseekers in Lahore, Pakistan.
- How
- Observational choice tracking within an RCT analyzing application probability by vacancy presentation sequence across phone calls and text messages.
What to do
Randomize or rotate the presentation sequence of options on decision platforms to prevent list-position bias from skewing user choices toward top-listed items.
From the source
"31% of applications go to the first vacancy listed on the call in both the treatment and control groups... jobseekers are disproportionately likely to apply to first-listed vacancies, but this pattern does not differ between treated and control jobseekers."
Why_Don’t_Jobseekers_Search_More_Barriers_and_Returns_to_Search.pdf