Hello Nairalanders,
I am currently researching on different types of affidavits
and the commonly sworn in Nigeria.
Please if you have idea about this research, kindly share with me. thanks.

Please can I be privy to the outcome?

The word “affidavit” means a written statement of facts voluntarily made by an affiant (otherwise known as “deponent”) under an oath or affirmation administered by a person authorized to do so by law. Thus, an affidavit is a written document signed by a deponent stating certain relevant facts within the direct or circumstantial knowledge of the deponent. An affidavit could be sworn in a court or within the office of a notary public authorized to administer oath on behalf of the public. Where the affidavit is done in a court, it must be signed and sealed by the commissioner for oath of the court. Further rules and practice procedure governing affidavit evidence generally can be found under the Evidence Act 2011.

In Nigeria, there are many instances where an affidavit is necessary and should be done by the deponent. For instance, where a deponent need to provides evidence of his or her age in the absence of certificate of birth, an affidavit of declaration of age becomes indispensable.

Similarly, an affidavit can be done in respect of the underlisted situations:

1. When contemplating change of name; affidavit of service by sheriffs;
2. Change of ownership (especially in motor vehicles);
3. Affidavit of means; Affidavit in lieu of tenement rate;
4. Trustees; Administrators; Executors’ affidavit.
5. Affidavit of Guardianship;
6. Proof of ownership;
7. Authorization cases;
8. Power of Attorney;
9. Lost Items/Documents of title;
10. Loss of Sim Card/Replacement;
11. Affidavits used in general practice litigation such as witness statement on oaths, affidavit in support of motions, affidavit required through official papers, MOUs, commercial documents requiring notarization or oath, among other areas.

Source https://www.nairaland.com/4163019/affidavits-police-report-nigeria
For more information visit the above link for details