See Section 2.04 (Precision and Clarity - Attribution), p. 39 of the APA Publication Manual for further details.
| Wrong: | The participants reported using alcohol and/or tabacco within the previous week. |
| Right (inclusive or): | The participants reported using alcohol or tabacco within the previous week. |
| Also Right (inclusive or): | The participants reported using alcohol, tabacco, or both within the previous week. |
| Also Right (exclusive or): | The participants reported using either alcohol or tabacco within the previous week. |
| Also Right (exclusive or): | The participants reported using either alcohol or tabacco (but not both) within the previous week. |
The APA Publication Manual does not provide further details.
One of the most common mistakes is using male and female as nouns, when they should only be used as adjectives. Since male and female can refer to the gender of any living entity, they can be seen as equating people with their gender. The terms, men and women, however, cannot apply to non-human entities and avoid this problem. Additionally, the term homosexuals equates people with their sexual orientation. Although unwieldy, this group of people should be referred to as lesbians, gay men, and bisexual people. Also keep in mind that homosexuality refers to a sexual orientation and not to any specific behavior. There is no such thing as "homosexual behavior."
See Section 2.12 (Linguistic Devices - Guidelines to Reduce Bias in Language), pp. 61-76 of the APA Publication Manual for further details.
| Wrong: | The participants were shown to a workstation, they were then instructed to read and sign the consent form. |
| Right: | The participants were shown to a workstation, and they were then instructed to read and sign the consent form. |
| Also Right: | The participants were shown to a workstation; they were then instructed to read and sign the consent form. |
| Also Right: | The participants were shown to a workstation then were instructed to read and sign the consent form. |
Note that the first correct example uses the simple comma and coordinating conjunction option. Although the second correct example uses the semi-colon option, it isn't really necessary in this particular example because commas are not used elsewhere. If the sentence contained one or more dependent clauses set off from the rest of the sentence with commas, then the semi-colon must be used to give greater clarity by signaling the reader that this conjunction is a major one (i.e., of two independent clauses).In the third alternative, the sentence has been rewritten to have a compound verb, eliminating the second independent clause altogether. The sentence also could have been rewritten to change one of the independent clauses into a dependent clause.
See Section 3.02 (Comma), pp. 78-80 of the APA Publication Manual for further details.
| Wrong: | The participants that were assigned to the control group were taken to a separate room. |
| Right: | The participants who were assigned to the control group were taken to a separate room. |
See Section 2.08, p. 48 for further details.
See Section 3.02 (Comma), pp. 78-80 and Section 3.04 (Colon), pp. 80-81 of the APA Publication Manual for further details.
| Wrong: | The debriefing form, that was printed on letterhead, was provided after the session was concluded. |
| Also Wrong: | The debriefing form which was printed on letterhead was provided after the session was concluded. |
| Right: | The debriefing form that was printed on letterhead was provided after the session was concluded. |
| Also Right: | The debriefing form, which was printed on letterhead, was provided after the session was concluded. |
Note that in the two wrong examples, we cannot tell if the author intended for the detail about letterhead to change the meaning of the sentence if it were left out. In the first correct example, the author clearly intended for the reader to consider the letterhead paper to be so important that the meaning of the sentence would change if it had been eliminated. In the second correct example, the author clearly intended for the reader to consider the letterhead paper to be a secondary and less important matter. It is important to follow the rules outlined here about the precise use of which and that (with appropriate commas) to signal the reader whether the clause is restrictive or non-restrictive. These rules apply even when several clauses in a row use the same relative pronoun.
See Section 2.10 (Relative Pronouns and Subordinate Conjunctions - Pronouns), p. 55 of the APA Publication Manual for further details.
| Wrong: | Trying to avoid the confusion of not having both a verb and a subject, especially in sentences with complex subjects, such as this one. |
| Right: | Trying to avoid the confusion of not having both a verb and a subject, especially in sentences with complex subjects, such as this one, can be frustrating. |
If you run into this error, print a draft of your work, circle each subject, and underline each verb. You may also find it helpful to think of a "reduced" version of the sentence with just the subject and verb, such as "Trying to avoid confusion can be frustrating." The subject and verb are much more obvious in this sentence than the example. Although this reduced form does not express the idea well, thinking about it can help you make sure to include both a subject and a verb in the more complex sentence.
There is no further detail in the APA Publication Manual because it is assumed that anyone writing in APA format should already know how to write in complete sentences.
| Wrong: | While the data in Reeder and Pryor's (1992) first study were collected from undergraduates, their 1995 study used data collected from the community at large. |
| Right: | Although the data in Reeder and Pryor's (1992) first study were collected from undergraduates, their 1995 study used data collected from the community at large. |
| Also Right: | Whereas the data in Reeder and Pryor's (1992) first study were collected from undergraduates, their 1995 study used data collected from the community at large. |
We note that it is actually highly unlikely that the data for the two studies were being collected at the same time, which is one valid interpretation of the incorrect wording.
See Section 2.10 (Relative Pronouns and Subordinate Conjunctions - Subordinate Conjunctions) pp. 56-57 of the APA Publication Manual for further details.The APA Publication Manual does not provide further details.
| Wrong: | Prior to conducting the main analysis, the data were screened for outliers, and cases with large numbers of missing data points. |
| Right: | Prior to conducting the main analysis, the data were screened for outliers and cases with large numbers of missing data points. |
Including the comma as in the incorrect example leads the reader to expect an independent clause. When the reader gets to the period without having found a verb for what was thought to be an independent clause, the reader has to go back and try to figure out why the comma is there. The answer, of course, is that there is no reason for the comma to be there. Keep in mind that a compound verb, subject, or object with only two components will not need a comma to separate them.
See Section 3.02 (Comma), pp. 79-80 of the APA Publication Manual for further details.
Pronouns must agree with the nouns to which they refer in both gender and number. Singular nouns take singular pronouns; plural nouns must take plural pronouns; and gender-neutral nouns must take gender-neutral pronouns.
| Wrong: | Each participant was asked to provide their informed consent. |
| Right: | Each participant was asked to provide his or her informed consent. |
| Also Right: | All participants were asked to provide their informed consent. |
See also S/H.
See Section 2.08 (Pronouns), pp. 48-49 of the APA Publication Manual for further details.
| Wrong: | The proportion of variance accounted for by the main effects were significant at the .05 level. |
| Right: | The proportion of variance accounted for by the main effects was significant at the .05 level. |
The plural word effects may be distracting and lead the writer to use the plural verb form even though the subject of the sentence is proportion, which is singular.
Note that the word data is always a plural word! The singular form of data is datum. Further, data is always plural in context.
See Section 2.07 (Agreement of Subject and Verb), pp. 44-47 of the APA Publication Manual for further details.
| Wrong: | The experimenter read the instructions aloud and the participants read and signed an informed consent form. |
| Right: | The experimenter read the instructions aloud, and the participants read and signed an informed consent form. |
The APA Publication Manual does not provide further details.
See Section 2.11 (Parallel Construction - Elements in a series), p. 60 of the APA Publication Manual for further details.
See Section 2.13, p. 67 of the APA Publication Manual for further details.
| Wrong: | The researcher used Tukey's HSD for post-hoc testing to further explore the differences between the cells of the ANOVA design. |
| Right: | The researcher used Tukey's HSD for post-hoc testing to explore further the differences between the cells of the ANOVA design. |
We frequently split infinitives in our spoken language, so often such phrases sound right, whereas the correctly worded phrasing sounds stiff and formal. We might or might not catch split infinitives in our spoken language, but they are very noticeable in written language.
There are no further details in the APA Publication Manual.
See also SP?.
See Section 3.10 (Preferred Spelling), p. 89, and Section 5.23 (Spelling Check), p. 302 of the APA Publication Manual for further details.
See Section 3.10 (Preferred Spelling), p. 89 of the APA Publication Manual for further details.
| Wrong: | The participants were given an informed consent form, several surveys and a debriefing form. |
| Right: | The participants were given an informed consent form, several surveys, and a debriefing form. |
See Section 3.02 (Comma), p. 78 of the APA Publication Manual for further details.
See Section 2.03 (Economy of Expression), p. 35 of the APA Publication Manual for further details.
| Wrong: | The data were analyzed by Hesson-McInnis (1998) to investigate the effects of feedback on grammar errors |
| Right: | Hesson-McInnis (1998) analyzed the data to investigate the effects of feedback on grammar errors |
See Section 2.06 (Verbs), pp. 41-43 of the APA Publication Manual for further details.
| Wrong: | This suggests that people often assume that the pronoun reference is obvious. |
| Right: | This phenomenon suggests that people often assume that the pronoun reference is obvious. |
See Section 2.04 (Precision and Clarity - Pronouns), p. 37 of the APA Publication Manual for further details.
See Section 3.20 (Use of Abbreviations), pp. 103-104 of the APA Publication Manual for further details.
Add a paragraph break where indicated by the
symbol because the main topic or central idea has shifted. Each
paragraph should have only one major theme, and very long paragraphs
with multiple themes should be avoided. If the symbol is preceded
by the word no or has a line drawn through it, then do not
break for a new paragraph at that location because very short
paragraphs with the same major ideas should be avoided.
See Section 2.03 (Economy of Expression - Unit Length), p. 36 of the APA Publication Manual for further details.
| For Example: | ![]() |
| For Example: | ![]() |
| For Example: | ![]() |
| For Example: | ![]() |
| For Example: | ![]() |
See Sections 3.12 - 3.18 (Capitalization), pp. 94-100 of the APA Publication Manual for further details.