Acquisition of Mental Multiplication Skill: Evidence for the Transition Between Counting and Retrieval Strategies

Strategies used by third and fourth graders to perform simple multiplication problems were examined. Children participated in an interview and then completed a timed production task in which they solved single-digit multiplication problems. Analyses of children's verbal reports and of solution latency data were found to support the view that the acquisition of mental multiplication begins with the use of counting strategies. By the fourth grade, however, there was a marked transition toward the use of a retrieval strategy. Children in both grade levels were found to apply rules to solve problems that involved multiplication by 1 or 0; however, not all students reported using these rules, and those students who did report the use of these rules were not consistent in the application of the rules. Comparisons between groups' and individual subjects' performance revealed that some important individual differences were obscured when the group served as the unit of analysis. Although several discrepancies were noted between the analyses of verbal reports and the analyses of chronometric data, correlations between the two methods were moderately high.     

Nonverbal Behaviors and Perceptions of Sexual Intentions: Effects of Sexual Connotativeness,Verbal response,and Rape Outcome

Through the exchange of nonverbal and verbal behaviors, a man and a woman on a date negotiate situated identities. However, a woman's nonverbal and verbal behaviors may reflect an identity discrepant from the one she intended to project, leading to miscommunication between men and women regarding the woman's desire for sexual activity. In Experiment 1, subjects read scenarios in which a woman, Mary, engaged in behaviors that were low, moderate, or high in the degree to which they connotated a desire for sex. In addition, they learned that Mary responded to her date's sexual advances either by saying "no," or by slapping him, or they received no information regarding Mary's verbal response. Subjects were also informed that Mary's date either did or did not force her to have sexual intercourse. Subjects perceived Mary more sexually as her behaviors increased in sexual connotation. In addition, they perceived that Mary desired sex more when no information about her verbal response was provided than when she resisted her date's sexual advances. Subjects also rated the woman more negatively when her nonverbal behaviors were incongruent with her responses to her dale's sexual advances. Contrary to previous research, little evidence of victim derogation was obtained. Results from Experiment 2 showed that men and women agreed in their perceptions of a woman whose behaviors connoted a high interest in sex, but that men perceived behaviors low in sexual connotation ore sexually than women. Implications of the data for understanding sexual miscommunication between men and women as well as reactions to rape victims are examined.     

Own-age biases in verbal person memory

Two experiments examined own-age biases in younger adults', older adults', and children's verbal person memory. In line with findings from face recognition studies, Experiment 1 showed that younger adults had a better recall of own-age than of other-age targets, while older adults were unaffected by target age. Participants' self-reported interest in targets did not predict target memory. Experiment 2, which examined children's and younger adults' memory of own- and other-age targets, showed an own-age advantage in children's but not in younger adults' verbal person memory. Differences in expertise of own-/other-age targets, in combination with a development of expertise throughout the Hfespan, may account for the findings, although alternative explanations should be considered. Implications for theory and practice are discussed.     

Social exclusion and donation behaviour: What conditions motivate the socially excluded to donate?

Previous research has indicated that social exclusion can result in people becoming more focused on themselves than on others, and this may reduce their likelihood of engaging in prosocial behaviour. However, the question of how to promote prosocial behaviour in people who have experienced social exclusion remains. This study comprised two experiments that address this question in the context of donation advertising. Experiment 1 examined participants’ donation intentions after experiencing social exclusion in a ball‐passing game. Experiment 2 followed the same design as Experiment 1, except that real‐life donation behaviour was measured. Consistent with prior findings, our results indicated that those who experienced social exclusion displayed lower donation intentions (Experiment 1) and donated less (Experiment 2) than did those who did not experience social exclusion. However, when those who experienced social exclusion watched advertisements that only portrayed alienated people, they showed as much donation intent as those who did not experience social exclusion (Experiment 1) and ultimately donated more (Experiment 2). These findings indicate that social exclusion may increase an individual's tendency to help others who also are alienated.     

Conservation training in four-year-old children

In Experiment 1 two training procedures were used to teach four-year-olds to conserve. Verbal rule instruction consisted of providing verbal rules and demonstrations of the operations referred to by the rules. Feedback consisted of providing verbal feedback contingent upon the children's responses. One week after training on conservation of number and length the children were given a posttest which included tests of conservation of number, length, and mass. Children who were given verbal rule instruction conserved significantly more on the number and length posttest problems than children who were not. However, this learning did not transfer to the mass problems, possibly because mass is not naturally acquired until some time after conservation of number and length. The feedback training procedure had no effect on conservation performance. In Experiment 2, the verbal rule instruction procedure was used to train four-year-olds on conservation of length and mass. One week after training the children were tested on both conservation of number, which is typically acquired before length and mass, and conservation of weight, which is typically acquired after length and mass, as well as on conservation of length and mass. Children who were given training conserved more on all four types of problems than children in the control group.     

Are diagrams always helpful tools? Developmental and individual differences in the effect of presentation format on student problem solving

Background. High school and college students demonstrate a verbal, or textual, advantage whereby beginning algebra problems in story format are easier to solve than matched equations ( Koedinger & Nathan, 2004 ). Adding diagrams to the stories may further facilitate solution ( Hembree, 1992 ; Koedinger & Terao, 2002 ). However, diagrams may not be universally beneficial ( Ainsworth, 2006 ; Larkin & Simon, 1987 ). Aims. To identify developmental and individual differences in the use of diagrams, story, and equation representations in problem solving. When do diagrams begin to aid problem‐solving performance? Does the verbal advantage replicate for younger students? Sample. Three hundred and seventy‐three students (121 sixth, 117 seventh, 135 eighth grade) from an ethnically diverse middle school in the American Midwest participated in Experiment 1. In Experiment 2, 84 sixth graders who had participated in Experiment 1 were followed up in seventh and eighth grades. Method. In both experiments, students solved algebra problems in three matched presentation formats (equation, story, story + diagram). Results. The textual advantage was replicated for all groups. While diagrams enhance performance of older and higher ability students, younger and lower‐ability students do not benefit, and may even be hindered by a diagram's presence. Conclusions. The textual advantage is in place by sixth grade. Diagrams are not inherently helpful aids to student understanding and should be used cautiously in the middle school years, as students are developing competency for diagram comprehension during this time.     

When Even Arbitrary Order Becomes Important: Developments in Reliable Temporal Sequencing of Arbitrarily Ordered Events

By late in the first year of life, children show temporally ordered recall of event sequences, the orders of which are constrained by enabling relations; they do not reliably recall arbitrarily ordered events. Using elicited imitation, in two experiments, we examined age-and experience-related changes in young children's recall of events, the orders of which are arbitrary. The changes were found to have implications for the efficacy of verbal reminding and to be related to developments in language. Specifically, on the basis of a single experience, 16-month-olds did not accurately recall arbitrarily ordered event sequences either immediately or after a two-week delay (Experiment 1); 22-month-olds recalled the events immediately, but not after the delay; by 28 months, children recalled the events even after the delay (Experiment 2A). This development was accompanied by changes in the ability to benefit from verbal reminders: 28-month-olds' recall was facilitated by provision of verbal reminders, whereas that of the younger children was not. Moreover, age-related changes in accurate reproduction of lengthy arbitrarily ordered event sequences were found to be related to developments in language (Experiment 2B). Critically, the limitations on 1-year-olds' performance that are overcome with age are not absolute: After three experiences, 16-month-olds accurately recalled the events after a two-week delay; their recall was facilitated by verbal reminders (Experiment 1). The implications of these findings are discussed.     

Evaluating the Effect of Listeners' Response on Speakers' Later Recollection and Impression of the Story

The purpose of this study was to investigate a listener's role in a speaker's later recollection and impression of the story through a story-retelling method. Two experiments were conducted, and listener responses were manipulated in each experiment in different ways. Experiment 1 examined the effect of a listener's attitude toward story retelling, and Experiment 2 studied the effect of a listener's subtle nonverbal reaction to a specific part of the story's retelling on a speaker's later recollection and impression of that story. Results showed that the listener's verbal empathetic attitude encouraged more word utterances from the speaker, changed the narrative content more positively, and reinforced the speaker's recollection, especially with positive ideas. It also amplified the speaker's emotions more than the non-empathetic attitude (Experiment 1). However, the listener's nonverbal reaction to the specific part of the speaker's story did not appear to have a direct effect upon later recollection nor on the impression of the story (Experiment 2).     

Effects of Media Images on Attitudes Toward Tanning

Two experiments evaluated the effects of exposure to pictures of suntanned and untanned fashion models on attitudes regarding the importance of having a tan. In Experiment 1, 128 women were randomly assigned to view images of photographer's models that had been digitally altered to make it appear that the model either did or did not have a tan. Participants who viewed images of the models without a tan expressed significantly less positive attitudes toward tanning than did those who viewed the same models with a tan. In Experiment 2, 169 women were randomly assigned to view advertisements taken from fashion and beauty magazines that contained models who appeared to have suntanned skin, models who appeared not to have a tan, or no models at all. The results demonstrated that participants who viewed ads depicting models with untanned skin expressed less favorable attitudes toward tanning than did those who viewed control ads or those who viewed tan models. Given escalating skincancer rates, it is important to examine the role that media exposure may play in promoting risky behaviors.     

Increase in mastery levels using a computer-based tutorial/simulation in experimental psychology

A computer program was written in PCPilot to teach a unit in basic concepts in experimental design. The graphics-based program includes both tutorials and simulations. The students who used the program had significantly higher test scores than those in another class who did not; they reported that they enjoyed learning to use the program.     

Infants' concept of animacy

Nine- and 12-month-old infants' concept of animacy was investigated by exposing them to autonomous motion by an animate and by an inanimate object in a series of three experiments. In the first experiment, increases in negative affect in comparison to a baseline condition were taken to indicate that children considered an event to be anomalous. Results showed that 12-month-old infants consider self-propulsion by a small robot to be anomalous, but not self-propulsion by a human stranger. Experiment 2 indicated that 9- and 12-month-old infants expressed similar affective reactions when the robot's motion was contingent on verbal commands given by the mother, suggesting that these children are aware that it is not appropriate for an inanimate object's movements to be contingent on events occuring at a distance. The third experiment was designed to rule out the possibility that the infants' reactions in Experiment 2 were a function of the incongruity of the mother's behavior rather than due to the violation of the infant's concept of animacy. In this experiment, 12-month-olds' levels of attentiveness are increased when the robot obeyed verbal commands but not when a human stranger did so. These results suggest that infants discriminate animate from inanimate objects on the basis of motion cues by the age of 9 months.     

Directed search through autobiographical memory

Two experiments were designed to study retrieval from a well-ordered set of overlearned information in long-term autobiographical memory. In Experiment 1, each of 161 university students was asked to recall the name of one teacher from each of the 12 preuniversity school years. Recall was cued in forward (Grades 1-12), backward (Grades 12-1), or random order. Backward-ordered search proved most efficient: Fewer students failed to complete the task :in that search order, and those who did complete the task were faster than the successful students in the other search orders. Experiment 2 was similar to Experiment 1, except that the 148 students tested were asked to “think aloud” as they attempted recall. From the resulting protocols, 25 categories of verbal reports were identified, including four that reflected retrieval strategies. Omission errors (failures to recall teachers’ names) and, with one exception, frequencies of verbal reports decreased as recency increased. Taken together, the results of both experiments show that the recall of one item can indirectly aid the recall of contiguous items and that the probability of recalling an item from autobiographical memory is primarily a function of recency.     

How generative drawing affects the learning process: An eye‐tracking analysis

Generative drawing is a learning strategy in which students draw illustrations while reading a text to depict the content of the lesson. In two experiments, students were asked to generate drawings as they read a scientific text or read the same text on influenza with author‐provided illustrations (Experiment 1) or to generate drawings or write verbal summaries as they read (Experiment 2). An examination of students' eye movements during learning showed that students who engaged in generative drawing displayed more rereadings of words, higher proportion of fixations on the important words, higher rate of transitions between words and workspace, and higher proportion of transitions between important words and workspace than students given a text lesson with author‐generated illustrations (Experiment 1) or students who were asked to write a summary (Experiment 2). These findings contribute new evidence to guide theories for explaining how generative drawing affects learning processes.     

Impact of Televised Songs on Children's and Young Adults' Memory of Educational Content

In two experiments, children's and young adults' memory of content presented via educational televised songs from School House Rock was examined. Single exposures favored verbal over sung presentations for recognition of important verbal content. After repeated exposure to a second vignette, children and adults remembered more educational material verbatim, and boys were better able to sequence important visual material, but participants still did not recognize significant verbal program content. The results suggest that songs improve verbatim memory, but spoken presentations improve verbal comprehension of content. Policy implications concerning the educational and informational requirements of the Children's Television Act are considered.     

Teaching Fourth and Fifth Graders to Evaluate Information Sources During Text Comprehension

In two experiments, we examined fourth and fifth graders' comprehension of the source of information in texts presenting controversial issues. In Experiment 1, participants read short texts in which two people presented different arguments regarding an issue. Participants identified who said what and evaluated each source's knowledge of the issue. Most students correctly identified the source of information but failed to take into account each source's characteristics when determining who was most knowledgeable. In Experiment 2, we implemented an intervention on students' evaluations of information sources. Less skilled students in the intervention group assessed source knowledge more accurately than those in a control group. We conclude that elementary school students' comprehension of who says what in a text can benefit from training sessions that involve practice, feedback, explanations, and discussions. We consider the implications for document-based learning in elementary and secondary education.     

A functional analysis of social reinforcement in vicarious verbal conditioning

This article reports the results of 629 subjects in three experiments designed to replicate and extend the phenomenon of vicarious verbal conditioning. Experiment I replicated the finding that subjects who responded most to vicarious verbal conditioning were aware of the contingency involved. Experiment II attempted to examine the effects of prior history with the verbal reinforcer on vicarious verbal conditioning by providing seven groups of subjects with varying classic conditioning histories prior to vicarious verbal conditioning. The null results associated with this experiment were hypothesized to be due to the fact that the vicarious verbal conditioning took place in a language laboratory where the subjects could hear but not see the model. Experiment III replicated Experiment II in a live group context as was done in Experiment I. The results showed a) that vicarious verbal conditioning was again found to take place, b) that associating the verbal reinforcer with a tone or tone plus money via forward classic conditioning potentiated the effects of the verbal reinforcer, c) that backward classic conditioning did not potentiate the reinforcer, d) nor did either of two sensitization procedures potentiate the effects of the verbal reinforcer. Both aware and unaware subjects evidenced vicarious verbal conditioning.     

Predicting behavior from the Piers-Harris Children's self-concept scale

To demonstrate a relationship between the Piers-Harris Children's Self-Concept Scale (PHCSCS) and observable behavior, the PHCSCS scale scores of 52 high school students were related to three target behaviors thought to be reflective of a positive self-concept: verbal participation in a small group discussion, nonverbally-expressed self-confidence, and participation in extra-curricular activities. The nonverbal self-confidence measure was positively associated with the PHCSCS, as was a composite measure of the three target behaviors. Private Self-Consciousness did not moderate any of the scale-behavior relationships.