INTERPERSONAL RELATIONSHIPS - ATTRACTION - CHEMICAL MESSENGERS (Fisher et al, 2005)

19 important questions on INTERPERSONAL RELATIONSHIPS - ATTRACTION - CHEMICAL MESSENGERS (Fisher et al, 2005)

What type of experiment was conducted using fMRI in the study?

  • Laboratory experiment using fMRI (functional Magnetic Resonance Imaging).
  • Quantitative data (brain activity levels) combined with self-report data (Passionate Love Scale).
  • Within-subjects design: Each participant viewed both their beloved and a neutral person.

Why are interpersonal relationships important when looking at attraction and romantic love?

Interpersonal relationships provide context and mechanisms that explain initial attraction and eventual romantic love. This can be explained by proximity, similarity in values, backgrounds, and attitudes in relationships.

What were the independent and dependent variables in the study?

  • Independent Variable (IV): Type of photograph viewed (beloved or neutral acquaintance -> control).
  • Dependent Variables (DV):
    • Brain activity in reward system/dopamine-rich areas (fMRI).
    • Score on the Passionate Love Scale.
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What is the conclusion about romantic love in the study?

Romantic love is a motivational system driven by dopamine, not just an emotion. This system explains symptoms like high energy, focused attention, obsession, sleeplessness, and loss of appetite. Humans share this with animals for mating.

Is there a universal scale for attractiveness?

Yes, studies show individuals perceive attractiveness through physical appearance or personality, such as symmetrical face, white teeth, and clear skin.

What were the control variables in the experiment?

  • Duration of viewing (30 seconds per photo).
  • Number of repetitions (6 cycles per participant).
  • Filler task to reduce carryover effects.
  • Status of relationship (all participants were intensely in love).

What are the strengths of the study's experimental design?

The study has high internal validity, using an experimental design that allows causality between seeing the partner and brain activation. Objective measurement with fMRI reduces self-report bias. Triangulation combines fMRI data with self-report questionnaires.

How did Fisher et al (2005) test specific neural mechanisms associated with romantic love?

Fisher et al (2005) used fMRI to scan participants viewing photos of loved ones and acquaintances, identifying neural activation patterns. Dopamine, noradrenaline, serotonin, and testosterone were involved.

What is the role of dopamine in romantic love according to Fisher et al (2005)?

Dopamine is a feel-good neurotransmitter responsible for motivation. Thinking about a special someone releases dopamine, enhancing feelings of romantic love.

What were the key results regarding brain activity and dopamine areas?

  • Brain Activity: Reward system more active when viewing beloved compared to neutral photo.
  • Dopamine Areas: Increased activity in regions with high dopamine neuron concentrations.
  • Correlation: Higher Passionate Love Scale score linked to more active reward circuitry.

How does the study ensure ecological validity of stimuli in the experiment?

Real photos of participants' actual partners were used, making the emotional response more natural than artificial scenarios. Controlled conditions, including filler tasks and repeated trials, helped control fatigue and carryover effects.

What are the limitations regarding the sample size and selection?

The study had a small sample size of only 17 participants, reducing statistical power and generalization. The self-selected sample may introduce self selection bias, when volunteers may have different characteristics than people who didn't volunteer, making sampe unrepresentative.

What effect does noradrenaline have in romantic love?

Noradrenaline controls emotions and stress, increasing alertness and attentiveness to a partner, causing excitement and physical reactions like racing heart and sweaty palms.

What is the issue with the WEIRD sample in the study?

The sample is likely mostly Western, educated, young adults, typical of fMRI studies, limiting cross-cultural generalizability.

What happens to serotonin levels when we fall in love?

Serotonin levels drop when we fall in love, causing obsessive thinking and heightened mood extremes, often experienced in new relationships.

What is the correlational aspect of passion in the study?

While the IV was manipulated, the link between passion score and brain activity is correlational. It is unclear if high dopamine causes high reported passion or vice versa. Participants were in love for ~7 months, limiting long-term attachment love applicability.

What is the role of testosterone in the "love cocktail"?

Testosterone increases sexual desire towards a new partner and feelings of aggression, motivating pursuit of a partner, though not a neurotransmitter.

What was the aim of Fisher et al (2005) study?

Aim: To investigate whether there are specific neural mechanisms (brain areas) associated with romantic love and to determine if romantic love is a distinct motivation system (driven by dopamine) rather than just an emotion.

What was the sample size and criteria for Fisher et al (2005) study?

Sample size was 17 participants (10 women, 7 men), self-selected. Participants had to be intensely in love for an average of 7.4 months, recruited via advertisements.

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