Unconscious manipulation of free choice in humans

Previous research has shown that subliminally presented stimuli accelerate or delay responses afforded by supraliminally presented stimuli. Our experiments extend these findings by showing that unconscious stimuli even affect free choices between responses. Thus, actions that are phenomenally experienced as freely chosen are influenced without the actor becoming aware of the manipulation. However, the unconscious influence is limited to a response bias, as participants chose the primed response only in up to 60% of the trials. LRP data in free choice trials indicate that the prime was not ineffective in trials in which participants chose the non-primed response as then it delayed performance of the incongruently primed response.     

Handing it on: family constructs, symptoms and choice

We suggest that pathology exemplifies a form of conscious or unconscious 'choice'. Each individual's potential choices of action are delineated by a network of shared options representing the family construct system. Over several generations, a tradition of permissible options is transmitted with a reshuffling and some change at each generation. Thus, both ordinary and problematic actions are based on a limited set of options. This view integrates the systemic emphasis on circular processes associated with problems with an explanation of the content or types of pathology that is presented. In a given family, the type of pathology shown is seen to be a result of a choice at a particular time from a permitted set of options. Some implications of such a view for the process of therapy with families are discussed.     

Active search,mediation, and the manipulation of cue dimensions: Emotion attribution in the false feedback paradigm

The present experiments investigated the mechanism(s) that produce the false feedback effect. Although the present studies replicated the basic phenomenon, previously proposed mediators of attention and arousal did not appear related to the effects obtained. In Experiment 1, change feedback slides were rated significantly higher than no-change feedback slides (F(1, 39)=11.88,p<.01). Correlations showed that both arousal and nonarousal feedback cues produced active search and influenced stimulus ratings. Attention or arousal differences between change and no-change feedback should not result in equal cue effects. In Experiment 2, feedback rating differences were eliminated by presenting less differentially ambiguous situational stimuli. These findings suggested that important factors in the emotion attribution process may be the relative ambiguity and subjective salience of both situational and physiological cues.     

Anticipation of reward omission as a cue for choice behavior

A within-subject partial reinforcement extinction effect was obtained in a conditional discriminative choice task. In choice acquisition, one group had learned a task in which one choice alternative was continuously reinforced (CRF) and the other alternative was partially reinforced (PRF). Most errors in the acquisition phase were the choosing of the CRF lever when the conditional stimulus signaled the PRF lever; in extinction this pattern of choice errors reversed. In extinction, most errors were choosing of the PRF lever when the conditional stimulus signaled the CRF lever. The predictions of frustration theory and sequential theory were compared with the choice data. The results were interpreted as consistent with the anticipatory frustration construct within an associative mediational theory.     

Unconscious manipulation of free choice by novel primes

The extent to which non-conscious perception can influence behaviour has been a topic of considerable controversy in psychology for decades. Although a challenging task, convincing empirical demonstrations have emerged suggesting that non-consciously perceived ‘prime’ stimuli can influence motor responses to subsequent targets. Interestingly, recent studies have shown that the influence of masked primes is not restricted to target-elicited responses, but can also bias free-choices between alternative behaviours. The present experiment extends these findings by showing that free-choices could also be biased by novel primes that never appeared as targets and therefore could not trigger acquired stimulus–response (S–R) mappings. This new evidence suggests that free-choice behaviour can be influenced by non-consciously triggered semantic representations. Furthermore, the results reported here support accounts of masked priming that posit an automatic semantic categorisation of non-consciously perceived visual stimuli.     

Word frequency as a cue for identifying function words in infancy

While content words (e.g., ‘dog’) tend to carry meaning, function words (e.g., ‘the’) mainly serve syntactic purposes. Here, we ask whether 17-month old infants can use one language–universal cue to identify function word candidates: their high frequency of occurrence. In Experiment 1, infants listened to a series of short, naturally recorded sentences in a foreign language (i.e., in French). In these sentences, two determiners appeared much more frequently than any content word. Following this, infants were presented with a visual object, and simultaneously with a word pair composed of a determiner and a noun. Results showed that infants associated the object more strongly with the infrequent noun than with the frequent determiner. That is, when presented with both the old object and a novel object, infants were more likely to orient towards the old object when hearing a label with a new determiner and the old noun compared to a label with a new noun and the old determiner. In Experiment 2, infants were tested using the same procedure as in Experiment 1, but without the initial exposure to French sentences. Under these conditions, infants did not preferentially associate the object with nouns, suggesting that the preferential association between nouns and objects does not result from specific acoustic or phonological properties. In line with various biases and heuristics involved in acquiring content words, we provide the first direct evidence that infants can use distributional cues, especially the high frequency of occurrence, to identify potential function words.     

The relationship of analogical distance to analogical function and preinventive structure: the case of engineering design

Analogy was studied in real-world engineering design, using the in vivo method. Analogizing was found to occur frequently, entailing a roughly equal amount of within- and between-domain analogies. In partial support for theories of unconscious plagiarism (Brown & Murphy, 1989; Marsh, Landau, & Hicks, 1996) and Ward's (1994) path-of-least-resistance model, it was found that the reference to exemplars (in the form of prototypes) significantly reduced the number of between-domain analogies between source and target, as compared with using sketches or no external representational systems. Analogy served three functions in relation to novel design concepts: identifying problems, solving problems, and explaining concepts. Problem identifying analogies were mainly within domain, explanatory analogies were mainly between domain, and problem-solving analogies were a mixture of within- and between-domain analogies.     

Automatic activation of categorical and abstract analogical relations in analogical reasoning

We examined activation of concepts during analogical reasoning. Subjects made either analogical judgments or categorical judgments about four-word sets. After each four-word set, they named the ink color of a single word in a modified Stroop task. Words that referred to category relations were primed (as indicated by longer response times on Stroop color naming) subsequent to analogical judgments and categorical judgments. This finding suggests that activation of category concepts plays a fundamental role in analogical thinking. When colored words referred to analogical relations, priming occurred subsequent to analogical judgments, but not to categorical judgments, even though identical four-word stimuli were used for both types of judgments. This finding lends empirical support to the hypothesis that, when people comprehend the analogy between two items, they activate an abstract analogical relation that is distinct from the specific content items that compose the analogy.     

The effect of payoffs and cue tones on detection of sinusoids of uncertain frequency

Previous Es, attempting to distinguish between the single and multiple band models of detection, have found that for some Ss the effective listening band is narrow and for others it is not. As in previous experiments, we ask Ss to detect sinusoids of various frequencies in a continuous background noise. However, we influence detection patterns by presenting cue tones and varying payoffs. In some conditions, the S’s detection performance as a function of signal frequency is so peaked that we can estimate the critical bandwidth. In other conditions, the same Ss produce flat detection contours. We interpret these different detection patterns as reflecting changes in the S’s listening strategy. It is argued that differences in listening strategy are responsible for the conflicting results found in earlier studies.     

Priming cue encoding by manipulating transition frequency in explicitly cued task switching

Explicitly cued task switching with multiple cues per task permits three types of transitions: cue repetitions (cue and task repeat), task repetitions (cue changes but task repeats), and task alternations (cue and task change). The difference between task alternations and task repetitions can be interpreted as a switch cost, but its magnitude varies substantially across experiments. We investigated how switch cost is affected by transition frequency (how often subjects repeat and switch tasks) with an experiment in which each transition had a frequency of .70 in separate sessions. Switch cost was smallest when task alternations were frequent and largest when task repetitions were frequent. Mathematical modeling of the data indicated that the different “switch costs” reflected priming of cue encoding for frequent transitions. Interpretations of our findings based on automatic priming from memory retrieval of past transitions and strategic priming from transition expectancies are discussed.     

Age-related decline in prospective memory: the roles of cue accessibility and cue sensitivity.

In two experiments the authors evaluated the hypothesis that age-related decline in prospective memory reflects momentary lapses of intention (MLIs), and explored two factors, cue sensitivity and accessibility, that may contribute to MLIs. MLIs were reliably greater than zero in Experiment 1, indicating that performance fluctuated over the course of the task. Analysis of the response latency data (RL) revealed that older adults demonstrated elevated RL for missed prospective cues and were much slower to respond correctly to prospective cues than younger adults. These findings indicate preserved cue sensitivity in later adulthood and an age-related decline in cue accessibility. Experiment 2 demonstrated that cue sensitivity did not result from an orienting response to the perceptual novelty associated with the prospective cues.     

The orthographic neighbourhood frequency effect in French: a letter-case manipulation study.

The neighbourhood frequency effect was investigated by a letter-case manipulation of French words presented in the go/no-go lexical decision task. Accented words were presented both in lower-case letters with written accents and upper-case letters with no written accents, two usual typographies in French. This procedure addressed the stimulus-matching problem by using intra-word comparisons as some words have different orthographic neighbourhoods in the two cases. Neighbourhood frequency was varied across case change for half of the words while it was held constant for the other half. The results showed an interaction between letter-case and neighbourhood constancy, so the inhibitory neighbourhood frequency effect could not be attributed to interstimulus comparisons or to typographical change. Implications are discussed in current models of visual word recognition.     

The effect of an irrelevant directional cue on choice reaction time: Duration of the phenomenon and its relation to stages of processing

Two experimental paradigms were used to investigate the interference which occurs in a choice RT task when the source of a stimulus does not correspond with its meaning. In one paradigm, subjects were instructed to delay executing their response to a red or green light until they heard a go signal which was presented 0, 150,250, or 350 msec after the light. In the other paradigm, subjects translated the pitch of a tone into an appropriate keypress response. For some groups, the stimulus response connections were specified prior to or simultaneously with the presentation of the stimulus tone, while, for other groups, the labeling of the response keys followed the onset of the tone. Results indicated that irrelevant directional cues produce interference which affects the response selection stage and persists for approximately 250 msec     

Bootstrapping the mind: analogical processes and symbol systems

Human cognition is striking in its brilliance and its adaptability. How do we get that way? How do we move from the nearly helpless state of infants to the cognitive proficiency that characterizes adults? In this paper I argue, first, that analogical ability is the key factor in our prodigious capacity, and, second, that possession of a symbol system is crucial to the full expression of analogical ability.     

All we need is a cue to remember: the effect of an extinction cue on renewal

In the present study, it was investigated by employing a human fear conditioning paradigm whether an extinction retrieval cue can attenuate renewal of conditioned responding after an extinction treatment procedure, and if so, what the precise role of such an extinction cue comprises. It was hypothesized that such a cue can attenuate renewal and would function as a safety signal capable of directly inhibiting the expectancy of an aversive outcome and conditioned skin conductance responding to a conditioned stimulus. The results demonstrated that the extinguished expectancy of an aversive outcome was renewed when the CS was presented outside the extinction context and that an extinction cue attenuated this effect. This extinction cue, however, only transferred its inhibitory properties to other, non-extinguished stimuli when there was no contextual switch. This safety signal function was not observed after a switch in context. Possible functions of the extinction cue and its application in extinction-based exposure treatments are discussed.     

Children’s tactics of mate choice manipulation: Exploring sex differences and personality effects

Parents do not always agree with their children’s mating decisions, and so they attempt to manipulate them in accepting mates of their choice and in terminating relationships with undesirable ones. Children engage in counter-manipulation in order to avoid undesirable mates to be imposed on them and to persuade their parents to accept the mates they have chosen. This paper aims to identify the main factors that predict the tactics that children use on their parents. In particular, three hypotheses are tested, namely the use of manipulation tactics is predicted by the personality of children, by the sex of children and by the sex of parents. Evidence from two independent studies finds support for the first two hypotheses, but no support for the third hypothesis. The implications of these findings are further discussed.