Overlooking the Obvious: Incentives to Lie

Over the years, people have searched for deception cues in the liar's behavior. However, the sender's incentives to lie might be more revealing than behavior. In Experiment 1, an incentive was developed that was predictive of lying. Judges with access to incentive information in addition to behavior achieved almost perfect lie/truth detection. This was not a result of the speakers' behavior being transparent (Experiment 2) but because incentive information was useful to separate lies from truths (Experiments 2 and 3). Experiment 3 revealed that people may forego perfectly diagnostic contextual cues to base their judgments on illusory behavioral cues.     

The Validity of Receptive and Expressive Vocabulary Measures with Spanish-Speaking Kindergarteners Learning English

Research examined construct meaning and validity for two new measures of receptive and expressive vocabulary for Spanish-speaking kindergarteners learning English. Substantive validity and generalizability of score meaning was assessed by examining correlations between an established measure (Peabody Picture Vocabulary Test–PPVT) and new measures (Stanford English Language Proficiency Test–SELP; Dynamic Indicators of Basic Early Literacy Skills, Word Use Fluency, DIBELS–WUF). Positive correlations between the SELP and PPVT supported validity of the SELP as a measure of receptive and expressive vocabulary for these children. DIBELS–WUF results were less clear with lower correlations between the PPVT raising questions about appropriateness.     

The relationship between mental vitality and cardiovascular health

Past measurement of vitality has included both emotional and physical components. Since aspects of physical vitality such as fatigue can be indicative of physical illness, the usefulness of existing measures of vitality to predict health is limited. This research was designed to examine the psychometric properties of a new Mental Vitality Scale and to test its associations with measures of cardiovascular health over the course of 2 years. The measure of mental vitality was administered in a two-part study using three different samples. In part 1, the reliability and validity of the scale was assessed with a student and a clinic sample. In part 2, medical data on mental and physical health were abstracted over a two-year period from 1041 patient records from a multi-specialty medical practice, and mental vitality assessed through a mailed questionnaire. The findings indicate that the Mental Vitality Scale is a valid and reliable questionnaire for measuring this construct. Mental vitality was also associated with reduced odds of several cardiovascular outcomes and prospective analyses suggest that mental vitality may serve a protective function in the development of cardiovascular disease. The results lend support for the importance of mental vitality as a construct that may be relevant for considering resilience in relation to cardiovascular disease.     

Cue competition effects in the planarian

The learning abilities of planarian worms (Dugesia tigrina) were assessed by using a number of Pavlovian conditioning paradigms. Experiment 1 showed that planaria were susceptible to basic conditioning in that they readily developed a conditioned response to a change in ambient luminance when it was consistently paired with an electric shock over a number of trials. In Experiment 2, the change in luminance was presented in a compound with a vibration stimulus during conditioning. Subsequent tests revealed poor conditioning of the elements compared with control groups in which the animals were conditioned in the presence of the elements alone, an instance of overshadowing. In Experiment 3, pre-training of one of the elements before compound conditioning resulted in blocking of learning about the other element. These results add to other studies that have reported cue competition effects in animal species belonging to different phyla (chordate, mollusk, arthropod), suggesting that learning in these phyla could be ruled by similar principles. The results are discussed adopting an evolutionary-comparative approach.     

Encoding strategy affects false recall and recognition: Evidence from categorical study material

The present research investigated memory vulnerability to distortions. Different encoding strategies were used when categorized lists were studied. The authors assumed that an imagery strategy would be responsible for decreasing false memories more than a word-whispering strategy, which is consistent with the model of semantic access and previous research in the Deese-Roediger-McDermott paradigm (the DRM paradigm; Deese, 1959; Roediger & McDermott, 1995). A normative study of category lists and 4 experiments were conducted to verify the memory vulnerability to different encoding strategies (imagery, word-whispering, control). Half of subjects recalled and half recognized previously studied words. The results revealed a marked reduction in false recognition and recall after imagery encoding, relative to after word-whispering encoding.     

Parent-Adolescent Relationship and Adolescent Psychological Functioning among African-American Female Adolescents: Self-Esteem as a Mediator

African-American female adolescents living in urban areas are at increased risk for adverse adjustment outcomes. The present study accomplished two goals. First, the quality of the parent-adolescent relationship across age groups was examined for differences among younger (i.e., 12'14) versus mid-range (i.e., 15'16) versus older (i.e., 17'18) adolescents. Second, self-esteem was examined as a possible mediator of the relationship between the quality of the parent-adolescent relationship and adolescent psychological functioning in a sample of 608 African-American urban adolescent females. With regard to developmental shifts in the quality of the parent-adolescent relationship, midrange adolescents reported a significantly poorer relationship with their mother than older adolescents. Results also indicated that self-esteem partially mediated the relationship between parent-child relationship and adolescent psychological functioning. Mental health professionals can broaden their interventions that aim to improve adolescent psychological functioning by either focusing on the quality of the parent-adolescent relationship or adolescent self-esteem.     

Orthographic cues to lexical stress: Effects on naming and lexical decision

Words whose spellings represent regular phonemic patterns, such asmint, show advantages in naming and lexical decision tasks over words, such aspint, that have exceptional relations between orthographic and phonemic patterns. We have extended such phenomena to the domain of lexical stress, by showing that disyllabic words whose spellings are consistent with their stress are easier to process than words whose spellings are misleading about stress. Such words are named more quickly and are pronounced with incorrect stress less often (Experiment 1). They are also classified more quickly and accurately in lexical decision tasks (Experiments 2 and 3). These results indicate that literate speakers have learned orthographic correlates to lexical stress in English. In addition, the similarities between results in the phonemic and prosodic domains indicate that models of reading developed for the former could be extended to the latter area.