Writing Hints for Psychology Papers
Writing Hints for Psychology

Here's a list of common problems in psychology papers. Read pp. 23-60 of the APA manual for concise and helpful hints on writing--this section addresses many of the bugaboos listed below.

Apostrophe S

Don't leave out the apostrophe when the "s" is possessive:

  • Right: The subject's score was computed.
  • Wrong: Each persons IQ was measured.

    If it is a plural word with an "s" on the end, the apostrophe goes after the "s":

  • Right: Subjects' scores were all well within the normal range.
  • Wrong: A computer recorded subjects reaction times, and printed the scores out.
  • Also wrong: Peoples pets are dear to them.
  • Also wrong: The 400 participant's consent forms were stacked in the corner.

    Affect/Effect

    When "affect" is a verb, it means to impact or have influence on:

  • Right: The budget cuts affect the National Science Foundation.
  • Wrong: We were all effected by his death.

    When "affect" is a noun, it means feelings, or emotions (used mostly in psychology and rarely elsewhere):

  • Right: A classic symptom of the disorder is inappropriate affect, such as laughing at funerals.
  • Wrong: The affect of arsenic poisoning is cumulative.

    When "effect" is a verb, it means to bring about. "Effect" is used as a verb a lot less than "affect":

  • Right: The energetic new administration started immediately to effect changes in the program's structure.
  • Wrong: The budget cuts effect us all. [Should be "affect"]

    When "effect" is a noun, it is the result of a cause:

  • Right: Evidence ruled inadmissible can have a big effect on jurors' verdicts. In other words, it affects the verdict a lot.

    Sentence Fragments

    A sentence has to have a subject and predicate. If a clause begins with a subordinate conjunction, it can't stand alone.

  • Right: We were all tired of listening to the professor, so we left.
  • Wrong: The first step was to record GSR. Next, heart rate.[this is a fragment]
  • Also wrong: Whether or not she had a tumor that had been removed. [fragment]
  • Also wrong: As opposed to subjects in the other condition.[fragment]

    Page number on quotes

    If you quote, YOU MUST PROVIDE THE PAGE NUMBER.

  • Right: Rodgers and Hodges (1996) conclude, "Today's students will falter if they don't cite references properly" (p. 52).

  • Right: "Quoting correctly is the single best predictor of success in 303" (Carini, 1996, p. 172) according to a study examining 85 separate factors.
  • Wrong: Leaving off the page number is "an abomination before the Lord" (Falwell, 1994).

    References you personally did not read

    If you did not read an article yourself, but you read ABOUT the article in someone else's work, you must give credit to the paper where you read ABOUT the article.

    For example: If you read about Freud's work on interpreting dreams in a 1994 article by Reve, you list Freud's work as cited in Reve:

    Freud (1900, as cited in Reve, 1994) thought dreams were highly meaningful.

    Reve's article is what goes in your reference section, not Freud's work, unless you read Freud's work firsthand.

    Avoid using many "as cited in" references--it is lazy, and means you are relying on other people to read, interpret and report about the work correctly. It is better to read the source yourself, if at all possible, and draw your own conclusions.

    Ampersands/"And"

    Use ampersands (&) inside parenthetical quotations and in the reference section. Use "and" when the citation is not within parentheses.

  • Right: Carini and Rodgers (1996) discovered the cure for dyslexia.
  • Right: Rats like swimming better than sex (Whisker & Flipper, 1995).

  • Wrong: Laurel & Hardy's 1994 paper has had a huge impact on the field.
  • Wrong: Phone numbers are harder to forget than zodiac signs (Anderson and Hintzman, 1996).

    Repetitive citations

    If you have just cited a reference in the previous sentence, you often don't need to provide the complete reference again in subsequent sentences, IF IT IS ABSOLUTELY CLEAR WHERE THE INFORMATION CAME FROM. However, I'd rather have you err on the side of citing things too much than too little.

    Example:

    Wyden and Smith's (1996) paper on mudslinging addresses issues of negative campaigning. Wyden and Smith [no need to put date again, IF there are no intervening articles and IF there are no other articles by Wyden and Smith in this paper] found that mudslinging hurts rather than helps voter turnout. Furthermore, their work shows absolutely no effect of retracting negative ads late in the campaign.

    What to do between paragraphs

    Don't skip an extra line. You may have to turn off some automatic feature of your wordprocessing program to avoid skipping the extra lines. Do start new paragraphs by indenting.

    Agreement of nouns and pronouns

    If a noun is singular, the pronoun that stands for it is also singular. If a noun is plural, the pronoun is plural. This agreement also holds for possessive pronouns.

  • Right: Subjects were given their experimental credit and thanked.
  • Right: Each subject filled out his or her questionnaire and then left the building.

  • Wrong: If a student cohabitates with a gerbil, they are more likely to start liking cardboard.

    Sometimes, there is a temptation to use "they" or "their" with a singular noun of undisclosed gender (e.g. "participant") in order to avoid using sexist language. It's still wrong, but so is sexist language. You can be both inclusive and grammatically correct--consult the APA manual for ways to avoid sexist language (pp. 50-51 and 54-56).

  • Right: Each participant was then instructed to tear off the top page of the packet.
  • Wrong: Each participant was then instructed to tear off the top page of their packet.

    Avoid specific names that will mean nothing to readers at other universities, or readers without specialized knowledge.

  • Right: Data were collected in a popular student bar.
  • Wrong: Data were collected at the Drunken Duck. (Note correct use of data in the plural!)

  • Right: Participants were students enrolled in a psychology research methods class.
  • Wrong: Participants were Psychology 303 students.

    Numbers

    See the APA manual, pages 99-105 for a complete guide to usage. There are MANY exceptions to the following rule:
    Use numerals for numbers 10 and greater; use words for numbers nine and lower.

    Note that you never start a sentence with a numeral, even if the number is 10 or greater.

    Ex: Twenty-nine years is a long time for anyone to live.

    It's/Its

    "It's" is a contraction of "it is." If you cannot substitute "it is" in the place of "it's," you are probably misusing it.

  • Right: It's the natural thing to do, baby.
  • Wrong: It's plastic top was broken. [It is plastic top was broken? NOT!]

    "Its" is the possessive form of "it," a singular pronoun.

  • Right: We saw the car right after the cat jumped in its way.
  • Wrong: We think its never going to happen again. [We think it is never going to happen again]

    Random, Randomly, Skewed, Significant

    These words have special, narrow meanings in psychology papers that are different from their meaning in everyday conversation. If you talk about a "random sample," it means that each element of the population had an equal chance of being selected as part of the sample. Think about it: If you used a sample made up solely of your friends, would it constitute a truly random sample of U of O students? (Probably not, unless you were friends with every U of O student. A sample of friends is more likely a sample of convenience than a random sample). "Skewed" refers to an asymmetric (as in not normal and not like a bell curve) distribution of scores. It is generally NOT the right term to describe data that are biased due to some flaw in the research design. "Significant" (as in "significant results") is reserved for STATISTICALLY significant findings, not just results that you think are worth noting.

    Last but not least: SPELLCHECK and PROOFREAD! Better yet, after you have spellchecked and proofread, give your paper to someone else to read -- a friend who is a good writer, or perhaps someone at Academic Learning Services.