Perceiving affect from arm movement.

We examined the visual perception of affect from point-light displays of arm movements. Two actors were instructed to perform drinking and knocking movements with ten different affects while the three-dimensional positions of their arms were recorded. Point-light animations of these natural movements and phase-scrambled, upside-down versions of the same knocking movements were shown to participants who were asked to categorize the affect of the display. In both cases the resulting confusion matrices were analyzed using multidimensional scaling. For the natural movements the resulting two-dimensional psychological space was similar to a circumplex with the first dimension appearing as activation and the second dimension as pleasantness. For the scrambled displays the first dimension was similar in structure to that obtained for the natural movements but the second dimension was not. With both natural and scrambled movements Dimension 1 of the psychological space was highly correlated to the kinematics of the movement. These results suggest that the corresponding activation of perceived affect is a formless cue that relates directly to the movement kinematics while the pleasantness of the movement appears to be carried in the phase relations between the different limb segments.     

Cholinergic receptor antagonists impair formation of intermediate-term memory in the chick

Several experiments examined the effects of cholinergic receptor antagonists on formation of memory in the chick. Scopolamine produced amnesia in chicks trained on a one-trial peck avoidance task in a dose-dependent manner. Pretraining injection of scopolamine produced amnesia that developed between 15 and 30 min after training, suggesting that scopolamine interferes with intermediate-term memory (ITM), previously described to be active during this time (Patterson, Alvarado, Warner, Bennett, & Rosenzweig, 1986). Pretraining injection of scopolamine or ouabain, an inhibitor of ATPase activity shown previously to inhibit formation of ITM, produced identical time courses of amnesia development, supporting the hypothesis that scopolamine interferes with ITM. Pirenzepine, an inhibitor of M1 muscarinic receptors, was effective in producing amnesia, whereas gallamine, an M2 receptor inhibitor, did not produce amnesia. These results suggest that M1, but not M2, receptors are involved in memory formation in the chick.     

The relations among cry characteristics, demographic variables, and developmental test scores in infants prenatally exposed to methadone

This study examined the relations among developmental test scores, infants' demographic characteristics, and cry features. Cry features were strongly related to developmental test scores at all ages, suggesting that use of the infants' cry characteristics can help to identify those infants at greatest risk for later developmental problems.     

On the psychological reality of a natural rule of syllable structure

If natural rules in phonology, such as the rule which deletes a word final consonant before a consonant, are frequently found in unrelated languages, it must be because they tap universal features of production and/or perception. The present experiment employed a learning task to see whether naive subjects have a predisposition for the natural rule as opposed to its converse (consonant deletion before a vowel). The Ss first learned four novel words (nouns) - two beginning with a consonant, two with a vowel - as paired associates to English ‘translations’. Then three novel adjectives were combined with each of the four nouns, following the natural rule for one group of Ss, the unnatural rule for the other. The twelve phrases were cued by their English translations and the S had to respond to each with the phonologically correct sequence of adjective and noun; confirmation followed each response. The Ss learning the unnatural corpus had a strong tendency to give natural responses, whereas the converse was not true. Consequently they made many more errors en route to mastery than their natural counterparts, even when the operative rule was displayed on the first trial by presenting in turn each adjective with its four following nouns. It appears that our Ss had implicit knowledge of the natural rule, even though it does not operate to any significant extent in English.     

Sally Beauchamp's career: a psychoarchaeological key to Morton Prince's classic case of multiple personality

By the methods of psychoarchaeology, the identity of Sally Beauchamp, Morton Prince's classic case of multiple personality, has been established. The reconstructed life history has for the first time revealed the roots of the dissociative process. This goal was actually obscured by the tangled web of Prince's rambling 1906 book and his other publications on the case. The determinative events included two instances of sudden infant death during the childhood period of the patient, the earlier of which was apparently never even known to Dr. Prince. Though not mentioned in the patient's autobiography, it probably induced the initial dissociation to defend the integration of the personality. The relevance of the new concept of SIDS (since 1969) is considered. Other disturbing influences were the constant rejection of the patient by her mother, who died at an early age, and probable severe abuse by the widowed father which led her to run away from home (permanently) at age 16. Nine years afterward, therapy with Dr. Prince began and lasted seven years. It is suggested that this case and the parallel one of Breuer and Freud (Anna O.) be comparatively reexamined from the standpoint of modern feminism. The role of the conventional 19th-century woman was not acceptable to either of them, and both probably had an unusually large innate, bisexual endowment. Endogenous conflict, intensified by social demands, produced dissociation as a pseudo-solution until, through opportune therapy and other environmental opportunities, each was able to achieve a productive modus vivendi. The relation of bisexuality to the etiology of personality dissociation in general is considered. An incidental but instructive discovery made in the course of the Prince research was an unknown letter from William James to Morton Prince about The Dissociation of a Personality. This find points up the fact that James's final metaphysic was a form of pluralistic panpsychism derived from both psychical research and the contemporary knowledge about dissociated personality. James postulated a cosmic multiple personality.