(a) Do correlational studies contribute in understanding 'cause and effect' relationship in human behaviour ? Discuss. (10…

(a) Correlational studies

Correlational studies can contribute to understanding cause and effect, but only indirectly. A correlation shows that two variables vary together; it does not by itself establish that one produces the other. The directionality problem remains: does unemployment cause depression, or does depression cause unemployment? The third-variable problem also matters: income, stress, or genetics may influence both. Nevertheless, correlation is valuable because it generates hypotheses, identifies risk factors, and is often the only ethical or practical method. Longitudinal and cross-lagged panel designs, dose-response patterns, partial correlation to control confounds, and Bradford Hill's criteria strengthen causal inference. The smoking–lung cancer link began with epidemiological correlations and was later supported by experimental and physiological evidence. In Indian public health, correlations between poverty, nutrition and mental health guide policy before trials are possible, especially where ethical review limits field experimentation. Thus, correlational studies do not prove causation alone, but they are indispensable for causal reasoning in human behaviour and public policy work.

(b) Psychological and cultural factors

Perception is not a passive recording; it is shaped by psychological states and cultural learning. Psychological factors include perceptual set, motivation, needs, emotions and expectations. A hungry person may see food more readily; anxiety can sharpen threat detection. These top-down influences support Gregory’s constructivist view that perception uses hypotheses. Cultural factors show that even basic depth cues are not interpreted identically everywhere. Segall, Campbell and Herskovits (1966) found weaker Müller-Lyer illusion effects in some non-Western groups living in less 'carpentered' environments, suggesting architectural and environmental learning. Hudson’s 1960 South African study, with African and European schoolchildren, found differences in pictorial depth perception, showing that reading depth in pictures depends on learned pictorial conventions and schooling. In India, exposure to crowded markets, road signs and religious iconography trains selective attention and pattern recognition. This makes perception both personal and socially learned in daily life. The debate between Gregory’s top-down constructivism and Gibson’s bottom-up direct perception is therefore not absolute: rich sensory information is picked up directly, but its interpretation is shaped by expectation and culture.

(c) Amnesia and emotional memory

Amnesia patients often cannot consciously recall emotional events, yet emotional memory may survive in implicit forms. Explicit or declarative memory depends heavily on the hippocampus, while emotional learning and affective conditioning involve the amygdala. This amygdala–hippocampus dissociation explains why a patient may fail to report a frightening event but still show fear, avoidance or physiological arousal. Claparède’s pinprick study is classic: an amnesic woman, after Claparède pricked her with a pin hidden in his hand, later refused to shake Claparède’s hand without being able to say why, indicating unconscious emotional memory. Bechara et al. (1995) showed a double dissociation: a patient with hippocampal damage acquired a conditioned fear response but could not recall the pairing, while a patient with amygdala damage recalled the pairing but showed no conditioned fear. Feinstein, Duff and Tranel (2010) found that amnesic patients shown sad or happy film clips stayed sad or happy long after they had forgotten the clips. Korsakoff patients similarly may not narrate the event accurately, but can display preserved emotional responses or implicit priming. Flashbulb memory research adds caution: emotional arousal can make memories vivid and confident, but vividness does not guarantee accurate explicit recall. In clinical settings, this distinction helps therapists work with trauma survivors who cannot verbalise experiences. Thus, amnesia does not erase all emotional memory; it mainly disrupts conscious, detailed recall and meaning over time.

(d) Narrative approach to personality

The narrative approach treats personality as a story the person tells about himself or herself. The question “Who am I?” is central because identity is not only a list of traits; it is a meaningful account of one’s past, present and future. McAdams’ life story model, extending Erikson’s idea of identity, organises personality into three levels (the self as actor, agent and author): dispositional traits, characteristic adaptations, and the integrative life narrative. Traits describe what a person is like; adaptations describe how they cope; the narrative integrates these into a coherent self. In this view, answering “Who am I?” involves selecting events, assigning themes, and constructing a sense of continuity and purpose. Indian oral traditions, family life stories and community memories show that identity is often socially authored, not merely individual. It thus complements trait psychology by explaining why similar traits can produce different life meanings. The narrative approach is powerful because it captures meaning, but it must be balanced with behavioural and biological evidence.

(e) Jet-lag and circadian rhythms

Jet-lag is a genuine phenomenon because the body contains internal clocks that do not instantly match a new time zone. The suprachiasmatic nucleus (SCN) in the hypothalamus acts as the master circadian pacemaker, regulating sleep, temperature, hormones and alertness over roughly 24 hours. Light is the main zeitgeber, or synchroniser, that entrains the SCN. Siffre’s cave studies and Aschoff’s bunker experiments showed that isolated humans maintain free-running rhythms, proving that circadian timing is endogenous. When travellers cross time zones, the SCN and peripheral clocks become misaligned. Eastward travel is usually harder because it requires phase advance, while westward travel requires phase delay and is often easier; since the intrinsic human period is slightly longer than 24 hours (about 24.2 hours, Czeisler), the clock delays more readily than it advances. Shift-work research shows similar disruption in workers whose schedules conflict with daylight. Melatonin, timed light exposure, and gradual schedule adjustment help adaptation. For Indian pilots and cabin crew, jet-lag is not imagined fatigue but a measurable circadian mismatch, which is why the DGCA's revised flight duty time limitations (2024) lengthened weekly rest and restricted night duties; railway staff and other shift workers face the same mismatch. It therefore has real health and safety consequences.