External focus of attention improves performance in a speeded aiming task

Athletic skills are often executed better when learners focus attention externally (e.g., on the trajectory of the ball after a tennis serve), rather than internally (e.g., on the position of their arm) (e.g., Wulf, 2007a). The current study explored the effects of attention focus on learning of speeded responses, and examined whether these benefits hold for retention and transfer. Participants performed a computerized speeded aiming task while focusing on the direction of the cursor (external focus) versus the direction in which their hand moved the mouse (internal focus). One week later, half of the participants performed the same task again (retention), and half performed the task under conditions in which the mouse movements were changed (transfer). Relative to internal focus, external focus led to faster acquisition and better maintenance of speeded responses over the retention interval.     

Specificity effects in training and transfer of speeded responses

In 3 experiments, participants, on signal, moved a cursor from a central position to 1 of 8 numerically labeled locations on the circumference of a clock face. Movements were controlled by a mouse in 1 of 4 conditions: vertical reversal, horizontal reversal, combined reversals, or normal (i.e., no reversals). Participants were trained in 1, 2, or 3 of these conditions and were tested 1 week later with either the same or a different condition. There were improvements across training and perfect retention across the delay. There was little or no transfer, however, even when training involved combined reversals or multiple conditions. These results illustrate severe specificity of training and are interpreted in terms of acquired inhibition of normal responses.     

Spatial relational learning in rufous hummingbirds (Selasphorus rufus)

There is increasing evidence that animals can learn abstract spatial relationships, and successfully transfer this knowledge to novel situations. In this study, rufous hummingbirds (Selasphorus rufus) were trained to feed from either the lower or the higher of two flowers. When presented with a test pair of flowers, one of which was at a novel height, they chose the flower in the appropriate spatial position rather than the flower at the correct height. This response may also have been influenced by a preference for taller flowers as acquisition of the task during experimental training occurred more readily when the reward flower was the taller of the pair. Thus, it appears that although learning abstract relationships may be a general phenomenon across contexts, and perhaps across species, the ease with which they are learned and the context in which they are subsequently used may not be the same.     

Effect of behavioral inhibition on interactions in mixed-sex dyads

The present studies assessed the effect of behavioral inhibition on interactions of college students in mixed-sex groups. In Study 1, 20 participants were arranged into two dyadic groups based on self-rated measures of approach/withdrawal behavior. These dyads (inhibited men/uninhibited women; inhibited women/uninhibited men) were videotaped during an unstructured 5-min. interaction in a laboratory. Time series analysis indicated greater behavioral covariation in the inhibited men/uninhibited women dyads and less behavioral covariation in the inhibited women/uninhibited men dyads. Additional analyses indicated a relationship between inhibition and comfort experienced during the interaction. Inhibited participants, particularly women, reported feeling uncomfortable while interacting with an uninhibited male partner. A second study corroborated the findings reported in Study 1 and also noted elevated heart rate in the inhibited women. This increased discomfort in women appeared to be related to heightened self-consciousness during the interaction.     

Zero Anaphora: Transfer of Reference Tracking Strategies from Chinese to English

English contains many nominals that would be absent in Chinese because Chinese makes greater use of zero anaphora, which is an empty grammatical slot in a sentence standing for a previously mentioned referent. Native Chinese and native English speakers were compared in comprehending modified English passages from a standardized reading test with nominals deleted that would be absent in Chinese. In three experiments, Chinese speakers showed superior comprehension as measured by objective multiple-choice questions in this case, but not when no words were deleted or when nominals were deleted that would not be absent in Chinese. These results imply that native Chinese speakers develop reference tracking strategies that they transfer to comprehending English.This research was supported in part by United States Army Research Institute Contracts MDA903-93-K-0010, DASW01-96-K-0010, DASW01-99-K-0002, and DASW01-03-K-0002 to the University of Colorado (Alice Healy, Principal Investigator).We thank Lyle Bourne and Barbara Fox for stimulating discussions about this research. We are also grateful to the Institute of Cognitive Science at the University of Colorado for their support of this research.Experiments 1 and 2 were reported at the International Conference on Functional Approaches to Grammar, Albuquerque, NM, July 25, 1995, and at the 37th Annual Meeting of the Psychonomic Society, Chicago, IL, November 3, 1996, and all three experiments were reported at the 2001 American Association for Applied Linguistics conference, St. Louis, MO, February 24, 2001.     

Effects of repetition and response deadline on associative recognition in young and older adults

The present study examined the joint effects of repetition and response deadline on associative recognition in older adults. Young and older adults studied lists of unrelated word pairs, half presented once (weak pairs) and half presented four times (strong pairs). Test lists contained old (intact) pairs, pairs consisting of old words that had been studied with other partners (rearranged lures), and unstudied pairs (new lures), and participants were asked to respond "old" only to intact pairs. In Experiment 1, participants were tested with both short and long deadlines. In Experiment 2, the tests were unpaced. In both experiments, repetition increased hit rates for young and older adults. Young adults tested with a long deadline showed reduced (Experiment 1) or invariant (Experiment 2) false alarms to rearranged lures when word pairs were studied more often. Young adults tested with a short deadline and older adults tested under all conditions had increased false alarm rates forstrong rearranged pairs. Implications of these results for theories of associative recognition and cognitive aging are explored.     

Sentence interference in the Stroop task

In two experiments on Stroop interference, we examined whether sentences can be processed without the intention of the reader. Participants named the ink colors in which words in sentences were printed, and the ink colors in which the same words, randomly arranged, were printed. In Experiment 1, sentences yielded longer response times (RTs) and more errors than did nonsentences, but only when they included words that were highly relevant to the color-naming task (i.e., color and color-related words). In Experiment 2, sentences yielded more errors than did nonsentences, and sentences in which the color words matched the set of ink colors yielded longer RTs than did nonsentences. The results indicate that sentence processing can be obligatory when the component words are highly relevant to the task.     

Derived Relational Responding As An Operant: The Effects Of Between-Session Feedback

The Psychological Record - Relational Frame Theory (RFT) views derived relational responding as an overarching operant class of behavior. One approach to the analysis of derived relations from the...     

Book reviews

The Rise of Christianity: A Sociologist Reconsiders History. Rodney Stark, 1996 Princeton, NJ: Princeton University Press xiv + 247 pp., US$24.95, £16.95 ISBN 0–691–02749–8

Church Watch: Christianity in the Countryside. Leslie J. Francis, 1996 London: SPCK 248 pp., £9.99 ISBN 0–281–04951–3

Strategic Church Leadership. Robin Gill & Derek Burke, 1996 London: SPCK vii + 96 pp., £9.99 ISBN 0–281–04901–7

’Nice When They Are Young’: Contemporary Christianity in Families and Schools. Mairi Levitt, 1996 Aldershot: Avebury viii +171 pp., £32.50 ISBN 1–85972–388–8

Die Sekten‐Kinder. Kurt‐Helmuth Eimuth, 1996 Freiburg: Herder Verlag 239 pp., DM 19.80 (pb) ISBN 3–451–04397–1

The Good Heart: His Holiness the Dalai Lama Explores the Heart of Christianity—and of Humanity. H.H. The Dalai Lama, 1997. London: Rider xiv + 207pp., £9.99 (pb) ISBN 0–7126–7275–3

Scientists as Theologians: A Comparison of the Writings of Ian Barbour, Arthur Peacocke & John Polkinghome. John Polkinghorne, 1996 London: SPCK 95 pp., £9.99 ISBN 0–281–04945–9

Psychiatry and Religion: Context, Consensus and Controversies. Dinesh Bhugra, ed., 1996 London, New York: Routledge 236 pp., £50.00, US$65.00 ISBN 0–415–08955–7 (hb)

Ethical Issues in Six Religious Traditions. Peggy Morgan & Clive Lawton, eds, 1996 Edinburgh: Edinburgh University Press 278 pp., £14.95 (pb) ISBN 0–7486–0709–9

Religious Institutions and Women's Leadership: New Roles Inside the Mainstream. Catherine Wessinger, ed., 1996 Columbia: University of South Carolina Press x +434 pp., US$24.95 ISBN 1–57003–073–1

Traveller in Space: In Search of Female Identity in Tibetan Buddhism. June Campbell, 1996 London: Athlone Press 225 pp., £17.95 ISBN 0–485–11494–1

Forbidden Revolutions: Pentecostalism in Latin America, Catholicism in Eastern Europe. David Martin, 1996 London: SPCK 96 pp., £7.99 ISBN 0–281–04999–8

The Ukrainian Greek Catholic Church and the Soviet State (1939–1950) Bohdan R. Bociurkiw, 1996 Edmonton, Toronto: Canadian Institute of Ukrainian Studies Press 310 pp., Ca$39.95(hb) ISBN 1–895571–12‐X

Qur'an, Liberation & Pluralism: An Islamic Perspective of Interreligious Solidarity against Oppression. Farid Esack, 1997 Oxford: Oneworld Publications xii + 288 pp., 3 Appendices + Glossary + Bibliography; £14.99, US$22.95 ISBN 1–85168–121–3

A Sociological Analysis of the Theology of Quakers: The Silent Revolution Studies in Religion and Society Volume 34 Pink Dandelion, 1996 Lampeter: Edwin Mellen Press xxxiv +417 pp., £59.95 ISBN 0–7734–8807–3

Counting the Days to Armageddon: The Jehovah's Witnesses and The Second Presence of Christ Robert Crompton, 1996 Cambridge: James Clarke & Co. 160 pp., £22.50 ISBN 0–2276–7939

Magical Religion and Modern Witchcraft. James R. Lewis, ed., 1996 Albany, NY: State of New York University Press vi + 423 pp., US$19.95 (pb) ISBN 0–7914–2890–7

The Divine Versus The Asurian: An Interpretation of Indo‐European Cult and Myth. Michael York, 1995 Bethesda, MD: International Scholars Publications 635 pp., US$94.95 ISBN 1–57309–029–8     

Auditory induction: Reciprocal changes in alternating sounds

When portions of a sound are replaced by a potential masker, the missing fragments may be perceptually restored, resulting in apparent continuity of the interrupted signal. This phenomenon has been examined extensively by using pulsation threshold, auditory induction, and phonemic restoration paradigms in which two sounds, the inducer and the inducee, are alternated (ABABA ... ), and the conditions required for apparent continuity of the lower amplitude inducee are determined. Previous studies have generally neglected to examine concomitant changes produced in the inducing sound. Results from the present experiments have demonstrated decreases in the loudness of inducers using inducer/inducee pairs consisting of tone/tone and noise/noise, as well as the noise/speech pairs associated with phonemic restorations. Interestingly, reductions in inducer loudness occurred even when the inducee was heard as discontinuous, and these decreases in loudness were accompanied by graded increases in apparent duration of the inducee, contrary to the conventional view of auditory induction as an all-or-none phenomenon. Under some conditions, the reduced loudness of the inducer was coupled with a marked alteration in its timbre. Especially profound changes in the inducer quality occurred when the alternating stimuli were tones having the same frequency and differing only in intensity-it seems that following subtraction of components corresponding to the inducee, an anomalous auditory residue remained that did not correspond to the representation of a tone.