Robôs sociáveis devem ser capazes de interagir, se comunicar, compreender e se relacionar com os seres humanos de uma forma natural. Existem diversas motivações práticas e científicas para o desenvolvimento de robôs sociáveis como plataforma de pesquisas, educação e entretenimento. Entretanto, embora diversos robôs sociáveis já tenham sido desenvolvidos com sucesso, ainda existe muito trabalho para aprimorar a sua eficácia. A utilização de uma arquitetura robótica pode reduzir fortemente o esforço requerido para o desenvolvimento de um robô sociável. Tal arquitetura robótica deve possuir estruturas e mecanismos para permitir a interação social, o controle do comportamento e o aprendizagem a partir do ambiente. Tal arquitetura deve ainda possuir estruturas e mecanismos para permitir a percepção e a atenção, a fim de permitir que um robô sociável perceba a riqueza do comportamento humano e do meio ambiente, e para aprender a partir de interações sociais. Os processos de aprendizado evidenciados na Análise do Comportamento podem levar ao desenvolvimento de métodos e estruturas promissoras para a construção de robôs sociáveis capazes de aprender por meio da interação com o meio ambiente e de exibir comportamento social apropriado. O proposito deste trabalho é o desenvolvimento de uma arquitetura robótica inspirada na Análise do Comportamento. A arquitetura desenvolvida é capaz de simular o aprendizado do comportamento operante e os métodos e estruturas propostos permitem o controlo e a exibição de comportamentos sociais apropriados e o aprendizado a partir da interação com o meio ambiente. A arquitetura proposta foi avaliada no contexto de um problema real não trivial: o aprendizado da atenção compartilhada. Os resultados obtidos mostram que a arquitetura é capaz de exibir comportamentos apropriados durante uma interação social real e controlada. Ainda, os resultados mostram também que a arquitetura pode aprender a partir de uma interação social. Este trabalho é a base para o desenvolvimento de uma ferramenta para a construção dos robôs sociáveis. Os resultados obtidos abrem muitas oportunidades de trabalhos futuros / Sociable robots should be able to interact, to communicate, to understand and to relate with human beings in a natural way. There are several scientific and practical motivations for developing sociable robots as platform of researches, education and entertainment. However, although several sociable robots have already been developed with success, much work remains to increase their effectiveness. The use of a robotic architecture may strongly reduce the time and effort required to construct a sociable robot. Such robotic architecture must have structures and mechanisms to allow social interaction, behavior control and learning from environment. Such architecture must also have structures and mechanisms to allow perception and attention, to enable a sociable robot to perceive the richness of the human behavior and of the environment, and to learn from social interactions. Learning processes evidenced on Behavior Analysis can led to the development of promising methods and structures for the construction social robots that are able to learn through interaction from the environment and to exhibit appropriate social behavior. The purpose of this work is the development of a robotic architecture inspired from Behavior Analysis. The developed architecture is able to simulate operant behavior learning and the proposed methods and structures allow the control and exhibition of appropriate social behavior and learning from interaction in the environment. The proposed architecture was evaluated in the context of a non trivial real problem: the learning of the shared attention. The obtained results show that the architecture is able to exhibit appropriate behaviors during a real and controlled social interaction. Additionally, the results show also that the architecture can learn from a social interaction. This work is the basis for developing a tool for the construction of social robots. The obtained results open oportunities of many future works

Orientador: Tânia Moron saes Braga / Banca: Raul Aragão Martins / Banca: Alessandra Turini Bolsoni Silva / Resumo: O tabagismo define-se como uma doença epidêmica, pediátrica, crônica e contagiosa, relacionando-se a uma das maiores causas mundiais de morbi-mortalidade. O contexto escolar apresenta-se como principal local para o desenvolvimento de medidas preventivas de caráter primário, tendo como alvo a população pré-adolescente. O treino de habilidades sociais pertinentes à exposição tabágica, bem como o uso da instrução verbal na aquisição de conhecimentos relativos aos malefícios do cigarro parecem indicar fatores de proteção à iniciação ao tabagismo. Esta dissertação caracteriza pré-adolescentes da 5ª série de duas escolas públicas e seus familiares quanto aos conhecimentos prévios sobre tabagismo, perfil sócio-econômico e história tabagística, e avalia, por meio de delineamento de pesquisa quase-experimental, a eficiência de uma intervenção educativa de prevenção primária ao tabagismo nas escolas participantes, sendo uma caracterizada como grupo Experimental (n=27) e a outra, grupo Controle (n=34). Foram realizadas avaliações com os pré-adolescentes distribuídos por sexo, antes e após a intervenção por meio de um Instrumento de Avaliação de Conhecimento e pela medida de auto-relato do Inventário Multimídia de Habilidades Sociais para Crianças (IMHSC-Del-Prette). A intervenção educativa constituiu-se de 8 sessões, com duas horas de duração cada, às quais ocorreram com freqüência de duas vezes por semana. As sessões foram intercaladas quanto ao conteúdo abordado, sendo as sessões ímpares de caráter informativo (utilização da técnica da instrução verbal) e, as pares, de caráter vivencial (realização do treino de desempenhos sociais adequados para lidar com exposição tabágica). Os resultados obtidos indicam diferença estatisticamente significativa entre os grupos Controle e Experimental nas fases... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Smoking is defined as an epidemic, pediatric, chronic and contagious disease, relating to one of the major worldwide causes of morbi-mortality. The school context is presented as the main place for the development of preventive measures that are primary, targeting the preadolescent population. The social skills training relevant to tobacco exposure and the use of verbal instruction in the acquisition of knowledge concerning the harm caused by cigarette seem to prevent smoking initiation. This dissertation characterize preadolescents in the 5th grade of two public schools and their families as to previous knowledge about smoking, social-economic profile and smoking history, and evaluates, through design of quasi-experimental research, the efficiency of an educational intervention for primary prevention of smoking among the participating schools, being characterized as Experimental group (n = 27) and the other, Control group (n = 34). Evaluations were conducted with preadolescents distributed by sex, before and after an intervention through a Knowledge Assessment Instrument and through the self-report measure of Multimedia Social Skills Inventory for Children (MUSSIC - Del-Prette). The educational intervention consisted of 8 sessions, with the duration of two hours each, which occurred twice a week. The sessions were interspersed according to the discussed subject, the odd sessions had an informative character (using the verbal instruction technique) and, the even ones, living character (realization of social performance training appropriate to dealing with smoking exposure). The results show a statistically significant difference between the Experimental and Control groups in pre and pos-intervention stages of the Knowledge Assessment measures, but did not show significant difference between these groups in the self-report of social behavior frequency of MUSSIC in the different studied... (Complete abstract click electronic access below) / Mestre

A presente dissertação apresenta um estudo experimental do comportamento verbal metafórico, verificando os efeitos deste fenômeno sobre respostas verbais subsequentes de vinte e cinco participantes universitários de uma universidade pública do Estado de São Paulo. Por meio de situações problemas, foi proposta uma investigação do controle de estímulos presente em tatos metafóricos (fera e vírus) como antecedentes verbais descritos pelo experimentador. Houve distintas condições experimentais para cada tato metafórico que exigiu a emissão de respostas verbais subsequentes de cada participante, após a leitura de um texto informativo. As respostas verbais subsequentes envolveram indicar entre alternativas a melhor para a resolução de problemas fictícios entre medidas preventivas e corretivas e informar a uma pessoa desconhecida sobre o texto informativo lido. O experimento foi arranjado, sob a hipótese de que os participantes tenderiam para medidas preventivas, se lessem o texto informativo com o tato metafórico da violência comparada a um vírus, ou para medidas corretivas, se lessem o texto informativo com o tato metafórico da violência comparada a uma fera. Os participantes, individualmente, foram convidados a realizar o mesmo protocolo de tarefas solicitadas na Linha de Base e na Condição Experimental. Este protocolo envolveu quatro tarefas, a saber (1) leitura de um texto informativo (2) escolha de alternativa preventiva ou corretiva para solução de problemas sociais, como fome na Linha de Base e violência na Condição Experimental, (3) indicação de trecho de controle para realização da tarefa anterior e (4) emissão de comportamento intraverbal, ou seja, contar sobre o texto informativo lido na primeira tarefa para uma pessoa desconhecida, que veria virtualmente. Na Condição Experimental, os participantes de cada grupo tiveram contato com informação apresentada por meio de metáforas distintas (grupo G-I e grupo G-II), sem metáfora (grupo G-III) e com estímulos arbitrários (palavra sem sentidos) comparados a metáforas distintas (grupo G-IV e grupo GV). Em todas as condições experimentais, houve avaliação do comportamento do participante como falante e ouvinte de seu próprio comportamento verbal. O experimento trouxe dados instigantes entre os grupos experimentais, visto que os participantes do grupo (a) G-I replicaram os dados de estudos anteriores em apenas 20% das respostas dos participantes, (b) G-II mantiveram controle verbal em 80% das respostas verbais subsequentes, ao assinalarem por medidas preventivas diante da metáfora vírus, (c) G-III mostrou uma prevalência dos participantes por medidas preventivas, visto que todos responderam por esta alternativa, (d) G-IV replicaram os dados de pesquisas anteriores mantendo uma relação entre o tato metafórico fera para 60% respostas verbais subsequentes com medidas corretivas, enquanto que (e) G-V estabeleceram o controle verbal metafórico sobre 100% das respostas verbais subsequentes com medidas preventivas. Na discussão de dados, são tecidas considerações acerca do desempenho dos participantes por grupo ressaltando (1) história de vida e história experimental, (2) contextos atuais e culturais presentes na vida dos participantes, (3) estabelecimento do controle de estímulos pelo tato metafórico, (4) comparativos entre os grupos, entre outras variáveis relevantes. Os achados do presente estudo são curiosos para a temática e mostra a pertinência de novos estudos no campo experimental para a temática / This work presents an experimental study of the metaphorical verbal behavior by checking the effects of this phenomenon on subsequent verbal responses. Twenty-five college student from a public university in the state of São Paulo were participants. Through problem situations, it was proposed an investigation of the stimulus control of metaphorical tact (\"beast\" and \"virus\") as verbal history described by the experimenter. There were different experimental conditions for each metaphorical tact which required a subsequent verbal responses of each participant, after reading an informational text. Subsequent verbal responses were: the participants indicated among the best alternatives for resolving problems between fictitious preventive and corrective measures and the participants reported to an unknown person about the text that the participants read. The experiment had the hypothesis that participants tend to give preventive measures, when read the text with the metaphorical tact of \"violence\" compared to a \"virus\" or corrective measures, if they read the information text with tact metaphorical of \"violence\" compared to a \"beast\". The individual participants were asked to perform the same protocol tasks requested in the Baseline and Experimental Condition. This protocol had four tasks, namely (1) reading informational text (2) choosing between preventive or corrective alternative to solve social problems such as hunger in the Baseline and violence in Experimental Condition, (3) showing control on the responses of previous tasks and (4) intraverbal behavior, that is, telling about the informational text read in the first task for an unknown person, which showed up virtually. In the Experimental Condition, participants in each group had contact with informational text presented through different metaphors (G-I and G-II groups), without metaphor (G-III group) and arbitrary stimuli (words without meanings) compared to different metaphors (G-IV and GV groups). In all experimental conditions, there was participant\'s performance evaluation as speaker and listener of his own verbal behavior. The experiment brought compelling data between the experimental groups, as members of the group (a) G-I replicated data from previous studies in only 20% of participants\' responses, (b) G-II remained verbal control in 80% of verbal responses subsequent, by pointing by preventive options before the \"virus\" metaphor (c) G-III showed a prevalence of participants with preventive options, since all accounted for this alternative, (d) G-IV confirmed the previous survey data keeping a relationship between the \"beast\" metaphorical tact and 60% subsequent verbal responses with corrective options, while (e) G-V established the metaphorical verbal control over 100% of subsequent verbal responses with preventive measures. In the data discussion, it was emphasize (1) life history and experimental history, (2) current and cultural contexts present in the lives of the participants, (3) stimulus control of metaphorical tact, (4) comparison between groups, and other relevant variables. The findings of present study are curious and inspires more studies in the experimental field of the theme

Há ainda resultados controversos na literatura indicando a superioridade ou não do procedimento de seleção de estímulos em relação ao de emissão de diferentes topografias de respostas no ensino de comportamento verbal para indivíduos não verbais ou com repertório verbal limitado. Os resultados dos estudos publicados anteriormente, por possuírem dados conflitantes em diferentes populações com atraso no desenvolvimento, parecem não ser generalizáveis. O estudo teve por objetivo realizar comparações entre os dois procedimentos, em que diferentes tatos foram treinados, buscando com isso, caracterizar o procedimento que produzisse a) menor quantidade de respostas necessárias para atingir critério de aprendizagem e b) menor número de erros e c) maior número de respostas corretas no pós-teste de simetria. No presente estudo foram empregados três participantes, com idades entre três e treze anos, diagnosticados com o transtorno do espectro autista, sem outras comorbidades psiquiátricas. Para o estudo foram criadas duas condições experimentais divididas em duas fases cada, duas para Seleção de Estímulos e duas para Topografia de Respostas e cada uma das fases se utilizou de conjuntos de estímulos (um objeto, um símbolo não familiar e um sinal de linguagem de sinais) especialmente desenvolvidos para o estudo. A primeira condição foi a de resposta baseada em Topografia, em que o participante é exposto a um objeto e o experimentador pergunta o que é isso? . A criança tem até cinco segundos para fazer o sinal de língua de sinais arbitrária correspondente ao estímulo. A segunda condição foi a de resposta baseada em seleção de estímulos ( tais condições foram invertidas na Fase 2). O experimentador apresentava um objeto e a criança tinha até cinco segundos para apontar o símbolo não familiar correspondente, que era randomizado com outros dois estímulos arbitrários. A randomização foi produzida por sorteio dos conjuntos de estímulos e a posição dos mesmos foi alterada em posição e ordem de apresentação. Após a aplicação de C1 e C2 na fase 1 e aplicação de C2-C1 na fase 2, foi aplicado um pós-teste de simetria para os tatos treinados. Os resultados apontam que apesar de haver vantagem no procedimento baseado em Topografias de Respostas, pode haver um efeito de ordem significativo e que a direção de aplicação dos procedimentos não apresenta diferenças significativas entre si. Tais achados parecem coadunar com as ideias de Shaffer (1993) que defende a busca de métodos individualizados de acordo com os repertórios particulares de cada aluno e a união de procedimentos deve ser adotada como principal estratégia de ensino para crianças com TEA / There still are controversies in the literature regarding the superiority or not of the Selection Based procedure as compared to Topography Based in verbal behavior teaching for nonverbal individuals or individuals with limited verbal repertoire. The results of previously published studies, having conflicting data in different populations with developmental delay, do not seem to be generalizable. The study aimed to make comparisons between the two procedures in which different tacts were trained, seeking thereby to characterize the procedure that produced a) lower number of responses needed to meet criteria for learning, b) fewer errors and c) higher number of correct answers in symmetry posttest. The present study employed three participants, aged between three and thirteen, diagnosed with autism spectrum disorder without other psychiatric comorbidities. For the study were created two experimental conditions divided into two stages each, two for Stimuli Selection and two for Responses Topography. Each phase used stimuli sets (an object, an unfamiliar symbol and a speech signal signals) specially developed for the study. The first condition was the topography based response, in which the participant is exposed to an object and the experimenter asks \"what is this? \". The child had up to five seconds to make the arbitrary language sign corresponding to the stimulus. The second condition was a response based on stimuli selection (such conditions are reversed in phase 2). The experimenter had an object and the child had up to five seconds to point the corresponding unfamiliar symbol, which was randomized with two other arbitrary stimuli. Randomization was produced by drawing of the sets of stimuli and the position thereof was changed in position and presentation order. After application of C1 and C2 in phase 1 and applying C1-C2 in step 2, a symmetry post-test for trained tacts was applied. The results show that although the Topography Based procedure has its advantages, there may be a significant order effect. Also, the direction of application of the procedures does not show significant differences. These findings appear to be consistent with the ideas of Shaffer (1993) who argues for the pursuit of methods customized to the particular repertoires of each student and that a unification of procedures should be adopted as the main teaching strategy for children with ASD

Submitted by admin tede (tede@pucgoias.edu.br) on 2018-08-22T17:29:26Z No. of bitstreams: 1 Simone Pires Monteiro.pdf: 17801539 bytes, checksum: c423834f8d730ff4a4a73e05f7eb6b57 (MD5) / Made available in DSpace on 2018-08-22T17:29:26Z (GMT). No. of bitstreams: 1 Simone Pires Monteiro.pdf: 17801539 bytes, checksum: c423834f8d730ff4a4a73e05f7eb6b57 (MD5) Previous issue date: 2018-03-15 / The present study is an adaptation of the reading program proposed by Iñesta (1980), on the methods of learning errorless, correction and stimulus control programs using the techniques of gradual fading of the visual "hint": color of the stimuli and method of choice according to the model. Aiming to verify its effect on the increase of the repertoire of reading in adolescents with systematic failure of reading, which was submitted to several attendances: pedagogical, psychological and medicated and yet the behavior of reading continued not being part of its behavioral repertoire. Participated in this research was a teenager 15 years old, elementary school student II of a municipal public school in the city of Goiânia. He was referred by the school with a complaint of delay in the development of reading with a history of diversified pedagogical service. For the application of the program were used plugs with syllables, words or phrases and protocols of records. A reading program was applied with 6 units of corrective programs, baseline establishment and two probes in order to prove the results. The data were analyzed and it was verified that the adolescent learned to discriminate the presented textual stimuli. Confirming the hypothesis that people with systematic failure in reading learn when there is a contingency arrangement for reading establishment using error-free learning technique with specific correction procedures. / Este estudo é uma adaptação do Programa de leitura proposto por Iñesta (1980), baseado nos métodos de aprendizagem sem erro, programas de correção e controle de estímulos, a partir de técnicas do esmaecimento gradual da "dica" visual: cor dos estímulos e método de escolha de acordo com o modelo.Tem como objetivo possibilitar a verificação de seu efeito no aumento do repertório de leitura em adolescente com fracasso sistemático de leitura, o qual tenha sido submetidoa diversos atendimentos: pedagógico, psicológico, medicamentoso e, ainda assim, o comportamento de ler tenha continuado a não fazer parte do seu repertório comportamental. Participou desta pesquisa um adolescente com idade de 14 anos no início da pesquisa, estudante do ensino fundamental II de uma escola pública municipal da cidade de Goiânia. Foi encaminhado pela escola com queixa de atraso no desenvolvimento da leitura com histórico de diversificado atendimento pedagógico. Para aplicação do programa, foram utilizadas fichas com sílabas, palavras ou frases e protocolos de registros. Foi aplicado um programa de leitura com oito unidades de programas corretivos, o estabelecimento de linha de base e seis sondas com a finalidade de comprovar os resultados. Os dados foram analisados e verificou-se que o adolescente aprendeu a discriminar os estímulos textuais apresentados, confirmando a hipótese de que pessoas com fracasso sistemático na leitura aprendem quando há arranjo de contingência para o estabelecimento de leitura, utilizando técnica de aprendizagem sem erro com procedimentos de correção específicos.

Over the past decades, decision making under risk has garnered a great amount of attention both in the field of economics and psychology. Although state-dependent variabilities of risk taking are well-documented, little is known about the effects of a person’s preferred time of day, or chronotype, in risky decision making. Under circumstances of circadian mismatch (e.g., when an “early bird” makes decisions in the evening), research suggests that decision making may reflect a greater reliance on heuristics, such as using stereotypes in social judgments. However, the effects of circadian mismatch on heuristics in risky decision making are relatively unexplored. This paper looks into the effects of circadian mismatch on the reflection effect: a behavioral bias in financial decision making, wherein individuals are risk averse when facing potential gains, and risk seeking when facing potential losses. Participants will be randomly assigned to their circadian matched or circadian mismatched conditions and will play a series of financial gambling tasks with real monetary incentives. This study predicts that the reflection effect will be exacerbated in circadian mismatched individuals as compared to matched participants. Exploring such an effect could have real-world implications on decision making under risk by providing critical knowledge about the effects of time of day on our susceptibility to behavioral biases. It could therefore point to the existence of a more optimal time of day to engage in such critical decision making.

To explore relational processes of couple’s satisfaction this study drew on the relational spirituality framework (Mahoney, 2010) in order to test a relational religiosity model to evaluate the effects of public, private, ideological, intellectual, and experiential religiosity that were mediated by relational virtues of commitment, sacrifice, forgiveness, and sanctification and relational equality on couple’s satisfaction in two cultures. Data for this component used convenience samples of English-speaking respondents (hereafter American sample; n = 1,529) and Russian-speaking respondents (hereafter Russian sample; n = 529). Results provided evidence to partially support relational religiosity model; specifically commitment, while a statistically significant intervening element, worked alongside other relational virtues such as (a) sanctification, as hypothesized, to positively mediate the indirect effect of ideological religiosity on couple’s satisfaction for the American men, (β = .17, 95% BCa CI [.11, .24], p < .001); (b) sanctification, as hypothesized, to positively mediate the indirect effect of experiential religiosity for the Russian men (β = .39, 95% BCa CI [.12, .65], p = .002); and (c) sacrifice and forgiveness, contrary to the hypotheses, to negatively mediate the indirect (β = -.20, 95% BCa CI [-.35, -.06], p = .005) and total (β = -.27, 95% BCa CI [-.43, -.12], p = .001) effects of ideological religiosity on couple’s satisfaction among Russian women. The second approach to this topic followed the family systems perspective, to examine the effect of religiosity on respondents’ own and their partners’ satisfaction with the relationship via the actor-partner interdependence model (APIM) (Kenny, Kashy, & Cook, 2006). This dyadic approach used samples of 435 American couples (n = 870) and 129 Russian couples (n = 258). The results provided evidence to support an actor effect of husbands’ religiosity on their own couple’s satisfaction for the American (t = 2.00, p = .046, β = .15, 95% CI [.01, .29]) and Russian (t = 3.65, p < .001, β = .45, 95% CI [.21, .70]) husbands. Moreover, APIM testing provided sufficient evidence to support a positive partner effect in that husband’s religiosity predicted their wives’ satisfaction with the relationship in the American (t = 2.06, p = .041, β = .17, 95% CI [.01, .33]) and Russian (t = 2.77, p = .006, β = .37, 95% CI [.11, .64]) couples. The parallels between the cultures strongly resembled existing cross-cultural dyadic scholarship providing compelling evidence to support cultural similarities rather than differences and suggesting that cross-cultural relational dissimilarities might not exist in the ways religiosity is linked to couple’s satisfaction; however, the differences between male and female respondents in each culture might be worth studying further. Additionally, this dissertation’s results and scholarship mentioned above reveal that religiosity and couple’s satisfaction may be indifferent to cultural variations suggesting these phenomena may be universal rather than culture-specific. Outcomes of this dissertation may benefit researchers, educators, policy makers, and practitioners who are interested in relationship virtues and religiosity's effect on couple’s satisfaction, which is known to provide a positive connection to the psychological, social, physical, and spiritual well-being of couples.

The purpose of the study was to evaluate the effectiveness of using a video model, graduated exposure (i.e., touch, smell, try, eat), and positive reinforcement to first increase food exploration, and then increase consumption of non-preferred foods in young children that exhibit food selectivity in a school setting. A multiple probe design across behaviors replicated across participants was used to evaluate the effectiveness of a treatment package. The treatment package consisted of a video model of each target behavior (touch, smell, try, eat) and positive reinforcement which included preferred foods and materials. The results indicated that the treatment package was effective in increasing the food exploration and consumption of non-preferred foods for one participant, and was inconclusive for the second participant.

The present study examined tact-to-mand transfer procedures and prompting procedures on a child diagnosed with autism. There was one participant, a 3-year-old Hispanic male, with a limited manding repertoire whom also possessed knowledge of tacting items. A multiple baseline design across settings was implemented in order to increase the number of mands emitted by the participant. Data were collected using paper and pen recording by the researcher and another observer to provide interobserver agreement. Mastery probes were collected at one week, two weeks, and four weeks. Results indicated that transfer procedures may be helpful in generalizing manding for a child with a limited manding repertoire. The implications of these findings are discussed in order to enhance manding repertoires in children with autism. Further research for this study would be to expand vocalizations and knowledge in order to use a pure mand instead of a prompt.

The model of basal ganglia function proposed by Albin, Young and Penney (1989) describes two anatomically independent motor pathways, the direct and indirect. However, under normal conditions striatal dopamine (DA) is required for the expression of motor behavior, and DAergic control of the two pathways (via D1 and D2 receptors, respectively) is dependent on co-activation. We tested for a possible breakdown of D1/D2 synergism using transgenic R6/1 mice bearing the human huntingtin allele (Htt). Motor stereotypy, observed prior to the onset of HD-related symptoms, was rated on a 5-point scale following activation of: A) D1 receptors alone, B) D2 receptors alone, and C) stimulation of both D1 and D2 receptors. Results revealed that mice with the HD allele, like their WT litter mates, depend on the co-activation of the indirect and direct motor pathways to facilitate deliberate behavior.