Development of Deception in Children
Theresa Student, Psychology 199, Fall and Winter 2015
PID# A1234567
Eleanor Roosevelt College
Faculty Advisor: Professor Gail Heyman
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B.S. Research Paper Example (Literature Review)
This is an example of a research paper that was written in fulfillment of the B.S.
research paper requirement. It uses APA style for all aspects except the cover
sheet (this page; the cover sheet is required by the department). It describes
research that the author investigated while taking the PSYC 199 course.
Running head: DEVELOPMENT OF DECEPTION IN CHILDREN 1
Development of Deception in Children
Theresa Student
Department of Psychology
University of California, San Diego
Author Note
Theresa Student, Department of Psychology, University of California, San Diego.
This article was completed in fulfillment of the requirements for the author’s Bachelor of
Science (B.S.) degree in Psychology at the University of California, San Diego. The author was
advised by Professor Gail Heyman.
Please address correspondence to: Theresa Student, Department of Psychology,
University of California, San Diego, La Jolla, CA 92093-0109. Email: usernam[email protected]
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affiliation
Article title
Author note
Author Notes have up to four paragraphs. These often discuss author affiliation, any
change affiliation, acknowledgments, and addresses for correspondence.
This is the title page in traditional APA style.
In APA style it is customary for the title page to be followed by a separate page with
the Abstract. However, an Abstract is optional for the B.S. degree paper.
DEVELOPMENT OF DECEPTION IN CHILDREN 2
Development of Deception in Children
Honesty is highly regarded and considered a virtue. There are many moral stories and
fables told to children about virtue, lying, and the negative consequences of deception. Parents
tell and read stories (The Boy Who Cried Wolf or Pinocchio) to their children emphasizing
honesty (Heyman, Luu & Lee, 2009). Not only do parents emphasize honesty to their kids, but
parents punish children for dishonesty (Lewis, 1993; Robinson, 1996).
Although parents condemn lying and emphasize the importance of honesty, many parents
lie to their own children (Heyman et al., 2009). In addition, many children tell different types of
lies more often than parents like to believe. Learning to lie successfully is a natural part of
growing up and human developmental trajectory. There are many types of lies and purpose for
lying for oneself or for others: white lies, lying to protect someone’s feelings, avoiding
punishment, and more. Lying is common in interpersonal communications. As children grow
older, children understand more about prosocial lie-telling. However, lying can become a
problem and has negative consequences if chronically or inappropriately used.
In order to successfully deceive another, the lie-teller needs to regulate verbal statements
and nonverbal behavior. Verbal statements refers to the content of the statements made during
the process of telling a lie, whereas nonverbal behavior refers to facial expressions, vocal, and
body language (Talwar & Lee, 2002).
This literature review examines studies on the development of deception among young
children, arguing that the emergence of lying and lying behaviors is normal and reflects
children’s advanced cognitive development with age. Moreover, there are many different types
of lies and many types of social situations and contexts that enable or inhibit children from lying
or telling the truth.
Article title
The Introduction section is the first major section of text. In this full-length literature
review article, it introduces the topic under investigation.
DEVELOPMENT OF DECEPTION IN CHILDREN 3
Review
Talwar and Lee (2002) wanted to examine verbal and nonverbal behaviors of lying and
truth-telling children aged three- to seven-years-old. They hypothesized that young children were
more likely to incriminate themselves verbally. Talwar and Lee used a resistant temptation
paradigm. This paradigm involves playing a guessing game with children. The experimenter
places a toy behind the children’s back and plays an audio cue. However, children are left alone
in the room with a toy behind their back and told not to peek. When the experimenter comes
back, the children are asked if they peeked. In the study, one hundred and one three- to seven-
year old participants were told they were going to play a game that involved guessing names of
popular toys. Children were instructed to sit in a chair and listen to the audio clue associated with
a toy that was kept behind them three times. On the third presentation, the experimenter was
interrupted to answer a phone. Before the experimenter left, they said, "Don't turn round to peek
and look at the toy" and "remember, no peeking." Children were left alone for about thirty to
sixty seconds.
The results of the study matched the experimenter’s hypothesis. When asked, 64% of the
three-year-olds confessed to peeking whereas most of the four- to seven-year olds lied. Overall,
79% of girls and 80% of boys lied. Three groups, parents, undergraduate students, and coders,
were asked to code children’s nonverbal behavior. They were looking at eye movement (e.g.
avoidance of eye contact), facial expressions (smiles, pressing/biting lips), body language
(shakes head, startled response), and prosody of vocalization (positive tone, sharp breaths).
Among the parents and undergraduate coders, there was a sex effect with boys being rated more
likely as lie-tellers. This suggest that there is a bias, as boys are more likely to be coded as lie-
tellers even though both boys and girls lied equally. The research also found 38% of children
This section is the largest of full-length literature review article and is the actual
“review” portion of the literature review.
Section title
DEVELOPMENT OF DECEPTION IN CHILDREN 4
who lied smiled and 11% of the children who did not lie smiled compared to 76% of children
who did not lie and had a relaxed mouth expression and 46% of children who did lie and had a
relaxed mouth expression. Overall, adults could not differentiate or distinguish liars from non-
liars. There is a significant age pattern for lying behaviors. Three-year-olds are less inclined to
lie about their transgressions and are pretty good at nonverbal behaviors. However, many of
these children are poor at controlling verbal statements. In addition, children are extremely good
at manipulating nonverbal behaviors to deceive others, as adults and undergraduate coders were
unable to distinguish the liars and non-liars. The study concludes that children under the age of
eight have still yet to develop successful deception (Talwar & Lee, 2002). However, asking the
subject to lie complicates these studies. In the real world, the person interacting with the lie-
telling individual would not know ahead of time that they are potentially being lied to or misled.
The situation and conversation becomes artificial, differing from the natural everyday
interactions and contexts (Talwar & Lee, 2002).
Similarly to the previous study, Lewis, Stanger, and Sullivan (1989) examined whether
three-year-olds are able to hide their emotional expressions intentionally when lying. They also
used the resistant temptation paradigm. The procedure of the study had children sit in a chair
with a toy behind them. The parent was in the room, not facing the child. The experimenter
asked the child, "Did you peek?" The subjects were coded with saying "yes" and nodding, saying
"no" and shaking their head, or giving no verbal or nonverbal response. The coders observed
whether the child peeked or did not peek at the toy after five minutes, and also nonverbal and
verbal responses. Smiling, gaze aversion, sober mouth, and relaxed-interest mouth were the
facial expressions and nonverbal behaviors (nervous touching, startled response, body inhibition)
that were coded.
DEVELOPMENT OF DECEPTION IN CHILDREN 5
The study concluded that young children are able to control their nonverbal expressions
quite well. Twenty-nine subjects out of thirty-three peeked: 38% said "yes," 38% said "no," and
24% gave no verbal response. Moreover, those who peeked and lied to the experimenter had an
increase in smiling and relaxed face, and the children with no response had more nervous
touching. The study suggests that children have increased positive nonverbal expressions and
behavior when they admit to transgression. Although this study was done over twenty years ago,
the findings corroborated with Talwar and Lee (2002) in that three year olds were good at
masking nonverbal expressions, but made verbal transgressions. According to this study, three-
year-old children are capable of deception. However, there are some limitations with this study,
as there were thirty-three subjects, a small sample, that were middle- and upper-class Caucasians.
Having a small sample size and type makes it questionable if this could apply to the general
population. Although this study found boys were more likely to admit their transgression (which
contradicts Talwar & Lee, 2000), it is a small sample size and is insufficient at generalizing to
the public. In addition, this was done in a laboratory. Many three-year-olds do not interact in a
lab often. Also, the child's parent was in the room, and that could affect whether the child lies or
not as children might believe they would be punished or face consequences at home (Lewis et
al.,1989).
There may be situations in which children tell the truth as opposed to lying. In the study
by Talwar, Lee, Bala, and Lindsay (2004), the researchers wanted to examine the implications of
children lying for their parents in the legal system. For experiment one, there was one hundred
and thirty-seven children ages three to eleven. They were assigned to one of three conditions
Parent Absent, Parent Present, and Child Absent condition. The parent committed a minor
transgression of breaking a puppet, acting distress, and asked their child to agree to not tell the
The use of topic sentences and connective phrases, as in this section, can improve
the readability of a review by better improving flow from one paragraph to the next.
DEVELOPMENT OF DECEPTION IN CHILDREN 6
researcher. In the Parent Absent condition, parents were asked to leave the room. In the Child
Absent condition, the child left the room with the experimenter and the parent “broke” the
puppet while the child was not in the room. Afterwards, the child was interviewed (asked
questions about what happened to the puppet) and assessed about truth and lie-telling. About half
the children in both Parent Absent and Parent Present conditions reported their parents broke the
puppet, while 22% of children in Child Absent condition did. There was no significant age
effect. Also, according to the assessment, children's understanding of lie and truth-telling
increased with age. The study concluded that children are not as likely to tell lies for a stranger,
especially with potential consequences for the children. Children may be motivated to lie for a
parent under certain conditions. More children lied if they knew they would not be blamed,
suggesting children changed their lie and truth-telling behavior depending on the context.
However, it is important to note that most children rarely are asked by strangers to lie or testify
against strangers. Moreover, in the Parent Absent and Parent Present condition, only about half
the children reported that their parents broke the puppet (Talwar et al., 2004).
Hays and Carver’s study (2014) examined whether lying to children affects their
subsequent honesty. They had one hundred and eighty-six children between three to seven, split
into groups of preschool children (3.5 to 5 yrs) and school-aged children (5 to 7 yrs). Using a
modified temptation resistance paradigm, children were asked to guess toys that were placed
behind them. Participants were randomly assigned into one of two conditions: a lie condition
(children were told a lie before the game) or no lie condition (children were not told a lie).
During the game, the experimenter was interrupted and told the children not to peek to the toy.
When the experimenter came back, they asked the children whether they peeked at the toy. The
younger children were more likely to peek at the toy, and children who were lied to were more
Overall, the B.S. degree research paper should have at least 6 pages of text. This
example has 7.
DEVELOPMENT OF DECEPTION IN CHILDREN 7
likely to peek. There were no subsequent lying behavior effects when experimenters lied to
preschool children, whereas there were increased subsequent lying behavior effects when
experimenters lied to school-aged children, suggesting school-aged children can modify their
truth and lie-telling behaviors. This study seems to suggest that adults can influence the lying
behavior of children. However, the study does not provide a causal explanation for, and is unable
to explain, why school-aged children are more likely to lie. In addition, there may be other
variables that causes school-aged children to lie. One reason may be the children know they are
in an experiment and believe they will never see the experimenter again, and feel confident to lie.
In addition, children need to peek at the toy before lying. The children who choose to not peek
may conceptualize and value honesty more than the group of children who choose to peek and
lie. Also, the experiment uses strangers – someone with no relationship to the children – to lie to
the children, which does not reflect reality. Children may react differently if it were their parent
who lied to them, as there may be positive or negative consequences for lying to parents (Hays &
Carver, 2014).
Sodian, Taylor, Harris, and Perner (1991) suggest that lies for personal gain and reward
emerge during preschool. In the study, forty-two children (divided into fourteen subjects of two-
year-olds, fourteen subjects of three-year-olds, and fourteen subjects of four-year-olds) were
assessed. Of interest was whether they could hide the location of a truck driver from the
experimenter. The child was taught how to hide the toy driver into five inverted cups while
another person had their eyes closed. The experimenter left the room, giving the instruction to
hide the driver so another experimenter would not be able to tell which cup the driver is under. If
the child left clues, the experimenter asked questions such as, "can you do something to the
tracks so the [experimenter 2] won't find the driver?" These questions and hints allowed the child
There should be evidence of critical thinking about the research. For example, on this
page the author comments about study limitations and posits alternative explanations.
DEVELOPMENT OF DECEPTION IN CHILDREN 8
the chance to remove visible clues. Children were scored by the number of hints they needed.
The two- and three-year-olds group needed more hints than the four-year-olds group. There were
some two- and three-year-olds who removed evidence before the experimenter asked questions
and gave hints though, suggesting two- and three-year-olds are capable in creating deceptive
strategies. Additionally, the majority of children in each group had some kind of deceptive
strategy such as producing a misleading gesture, although four-year-olds created more deceptive
strategies. The results suggest that there is an age difference in understanding how to deceive
people, as two- and three-year-olds required more prompting to produce misleading gestures and
remarks. It also appears children are capable of learning deception strategies, even if they do not
fully understand the act of deceptions (Sodian et al., 1991). It is possible the researcher could
have been leading the children into making deceptive strategies (e.g. pointing at the tire truck
marks to the children) without the children understanding what they are doing is deceptive.
Conclusions
The development of deception is a very natural and normal process of growing up. From
the studies reviewed, children become better liars with age although some children as young as
two and three show some deceptive strategies without prompting. In addition, children may lie or
tell the truth for different reasons depending on the social context and with whom the children is
interacting with (a parent versus a stranger). Also, deception requires children to be successful at
both verbal and nonverbal behaviors. Understanding the development of lying is important for
understanding how to better educate children and create developmental programs as well as
within legal settings.
In a full-length literature review article, a Conclusions section sums up the major
findings of the research that was reviewed.
DEVELOPMENT OF DECEPTION IN CHILDREN 9
References
Hays, C., & Carver, L. (2014). Follow the Liar: The Effects of Adult Lies on Children's
Honesty. Developmental Science.
Heyman, G. D., Luu, D. H., & Lee, K. (2009). Parenting by lying. Journal of Moral Education,
38(3), 353-369.
Lewis, M. 1993. The Development of Deception. In Lying and Deception in Everyday Life,
Edited by: Lewis, M. and Saarni, C. 106–125. New York: Guilford.
Lewis, M., Stanger, C., & Sullivan, M. (1989). Deception in 3-year-olds. Developmental
Psychology, 25, 439–443.
Robinson, W. P. 1996. Deceit, Delusion and Detection, Thousand Oaks, CA: Sage.
Sodian, B., Taylor, C., Harris, P. L., & Perner, J. (1991). Early Deception and the Child's Theory
of Mind: False Trails and Genuine. Child Development. 62(3), 468–483.
Talwar, V., & Lee, K. (2002). Development of lying to conceal a transgression: Children’s
Control of Expressive Behavior during Verbal Deception. International Journal of
Behavioral Development, 26, 436–444.
Talwar, V., Lee, K., Bala, N., & Lindsay, R. C. L. (2004). Children's Lie-Telling to Conceal a
Parent's Transgression: Legal Implications. Law and Human Behavior. 28, 411–435.
B.S. degree research papers should cite at least 5 references, including at least 3
empirical (i.e., peer-reviewed experimental research) papers, and cite those
references in the text and in a References section using APA format.