In [[ https://gerrit.wikimedia.org/r/plugins/gitiles/mediawiki/extensions/WikimediaEvents/+/5b84f89f9b06fbbe200ec7f5215a6639587bb793/modules/ext.wikimediaEvents/accountCreation/useAccountCreationInstrument.js | useAccountCreationInstrument.js ]], `account_created` events should include `performer_is_temp` contextual attribute which is needed by:
- [[ https://growthbook.wikimedia.org/fact-metrics/fact__2CcZv7bN9PoQTS3Nt3esLY | Permanent account creation rate ]]
- [[ https://growthbook.wikimedia.org/fact-metrics/fact__2Cc59w27tF41fLDNjG748o | Permanent account activation rate ]]
- [[ https://growthbook.wikimedia.org/fact-metrics/fact__2CcZv5n7zVBiJ3N8dCqMSF | Temporary account creation rate ]]
metrics in GrowthBook. Right now the experiment owner must remember to include that contextual attribute when configuring the experiment in TK UI or GrowthBook.
It would be easier/simpler and better to collect this per-event (rather than experiment-wide) via:
```lang=diff
- experiment.send( 'account_created' );
+ experiment.send( 'account_created', {}, [ 'performer_is_temp' ] );
```
And then the experiment owner doesn't have to select `performer_is_temp` when configuring the experiment, and there would be no risk of an experiment owner forgetting to do that step.