A reserve participant is someone you are asking to keep a commitment without knowing whether they will take part in the research.
That uncertainty makes the offer important.
What must they do? How long must they remain available? Will they travel? What will they receive if they are not needed?
Those questions deserve clear answers before someone accepts.
Someone may initially apply for a paid playtest involving several sessions. A reserve offer can be substantially different: attend the venue, wait and potentially leave without playing.
Even when the arrangement is explained accurately, it may be less attractive than the opportunity that prompted the application.
Reserve status should therefore be presented as a separate offer requiring active acceptance.
A lower reserve payment may reflect a shorter attendance requirement. But the amount needs considering alongside travel, waiting time and the availability being requested.
Comparing headline payments alone can be misleading. A two-day participant commitment and a short reserve window are different arrangements.
Equally, a short window at the venue can still involve a substantial journey or time away from work.
The useful question is whether the complete offer reasonably reflects what someone must set aside.
On one recent project, all 40 participants attended, but only one of four booked reserves arrived.
That exposed a weakness in the backup arrangement.
It does not prove that payment caused the absences. Availability, communication and other circumstances may also have contributed. Understanding what happened requires follow-up rather than assumptions about motivation.
Nevertheless, it is a reason to review whether the offer, acceptance and confirmation process gave us sufficient confidence.
Reserves should know:
When and where they must be available.
Whether they need to travel or complete preparation.
What they receive if they are not used.
How payment changes if they become a participant.
When they will be released from the commitment.
A reserve should never have to infer these details from the original participant advert.
Reserves exist to protect fieldwork. Their suitability, availability and understanding need attention even when they may never enter a session.
At Gromotion, we agree reserve arrangements with clients before booking and communicate the commitment to applicants. Where delivery falls short, we need to examine both the individual circumstances and the arrangement we offered.