1. Vikram Thakor Andres Christina
Pronoun-Antecedent
Agreement Error
Vikram Thakor
Andres
Christina

2. What is pronoun-antecedent agreement?
Pronoun antecedent agreement is when the pronoun agrees in number (referring to singular or plural) and person (referring to first, second, or third person) with its antecedent.
A singular pronoun refers to a singular antecedent.
A plural pronoun refers to a plural antecedent

3. The teacher forgot her book
Pronoun/Antecedent
A pronoun takes the place of a noun.
An antecedent is the word, phrase, or clause to which a pronoun refers.
Ex-
The teacher forgot her book
her is the pronoun, and teacher is the antecedent

4. If The Antecedent Is Singular, The Pronoun Should Be Singular
Ex-
Each of these computers has their drawbacks
Singular Plural
Change The Plural To Singular
Each Of these computers has its drawbacks
Singular

5. Plural If The Antecedent Is Plural, The Pronoun Should Be Plural.
Ex-
The store is looking for clerks who knows about gardening
Not Plural. Change It To Know. So The pronoun *who* refers to *clerks.* The verb must agree with this plural subject.
The store is looking for clerks who know about gardening

6. More Examples Everyone should make their own decision.
Change It To Singular
Plural
Everyone should make
his or her own decision
Singular

7. More Examples
Use a plural pronoun when each member of the group acts as an individual.
A Person Who Cares About The Environment Will Recycle Their Aluminum Cans
Person Is Singular
Plural
People Who Care About The Environment Will recycle Their Aluminum Cans

8. General rule
Remember this if the pronoun contains the words "one" "thing," or "body," then the pronoun is singular
Singular
Plural
All
Few
Most
Several
Both
Many
Others
some
Another
Anything
Everybody
Either
No one
Somebody
Anybody
Each
Everyone
Neither
Nothing
Someone
Make sure that a verb agrees with its subject

9. Sources http://depts.dyc.edu/learningcenter/owl/agreement_pa.htm