Feedback modalities as a consideration in biofeedback applications

Effects associated with specific feedback modalities are neither clear nor well explored. The present paper provides an overview of feedback modalities typically used for the presentation of information from major physiological systems. Some consideration of feedback modality in relation to theory is provided with a discussion of trends in past applications.     

Development of comprehension of sentences with “because” or “if”

The comprehension of sentences with “because” or “if” was investigated in children aged 2;9–11;11. Imitation, comprehension (choosing one of two picture sequences to go with a sentence), recognition (judging sentences with connective or structure differences as heard before or not), and synonymy (judging equivalence of meaning in sentences with different connectives or structures) tasks were administered, along with logical ordering, reversibility, and classification tasks. Above-chance responding in the comprehension task occurred by age 8, and in recognition and synonymy by age 10. Cognitive performance predicted 28.4% of the variance in the linguistic scores and cognitive success was concurrent with or preceded linguistic success. Comprehension of “because” and “if” appears to develop gradually, and is related to the development of certain operative rules.     

A comparison of sexually dysfunctional, maritally disturbed and well-adjusted couples

Married couples seeking sex therapy, marital therapy, or no form of therapy were compared with respect to personality, sexual and marital functioning. The Sexual Dysfunction and Marital Difficulties groups (15 and 10 couples respectively) were obtained from the waiting lists of a sexual dysfunction service and marital therapy unit. Non-Problem subjects (15 couples) were from a volunteer sample. Personal adjustment, sexual and marital functioning were assessed by means of the Eysenck Personality Inventory, a Sexual Behavior Questionnaire, the Locke-Wallace Marital Adjustment Survey, and the Azrin Marital Happiness Scale. Results indicated that although all three groups were within the normal range, problem couples had higher ‘neuroticism’ scores than did Non-Problem couples. Marital Problem couples were the most debilitated. Their marital adjustment was lowest, and their sexual functioning was comparable to the Sexual Dysfunction group. Marital adjustment of the Sexual Dysfunction couples was significantly higher than that of the Marital Difficulties couples. Therapeutic and theoretical implications of the differentiating characteristics in the three couple categories are discussed.     

A simple LSI-11 system for real-time control,interevent time storage,and data analysis

A simple laboratory computer system based on a Digital Equipment Corporation LSI-11, floppy disk, DRV11 parallel input-output board, and the RT-11 operating system is described. Interface to experimental devices is provided through a lab-built relay driver and relay closure sensing interface. An extensive high-level software package provides an easy-to-use control language (e.g., stimuli can be controlled with a simple “TURN ON” or “TURN OFF” instruction) and easy-to-use FORTRAN subroutines for data exploration (e.g., “IFIND” searches a data file for a particular event). The control software automatically generates, codes, and stores a complete log of every input and output event and its time of occurrence in each of five simultaneously running experiments. This provides the capability to reanalyze data in light of hypotheses not available when the experiment was designed. The FORTRAN subroutine library for data exploration provides a conditional and iterative search facility to sift out events or sets of events from the data file for analysis. Standard FORTRAN statements perform arithmetic operations on the resulting data.